Comment cleanup

.ci/before_build_wheel.sh

@@ -7,4 +7,4 @@ if command -v yum &> /dev/null; then
 fi
 
 # Install a Rust toolchain
-curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain stable -y --profile minimal
+curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain 1.82.0 -y --profile minimal

.ci/scripts/auditwheel_wrapper.py

@@ -0,0 +1,146 @@
+#!/usr/bin/env python
+#
+# This file is licensed under the Affero General Public License (AGPL) version 3.
+#
+# Copyright (C) 2023 New Vector, Ltd
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# See the GNU Affero General Public License for more details:
+# <https://www.gnu.org/licenses/agpl-3.0.html>.
+#
+# Originally licensed under the Apache License, Version 2.0:
+# <http://www.apache.org/licenses/LICENSE-2.0>.
+#
+# [This file includes modifications made by New Vector Limited]
+#
+#
+
+# Wraps `auditwheel repair` to first check if we're repairing a potentially abi3
+# compatible wheel, if so rename the wheel before repairing it.
+
+import argparse
+import os
+import subprocess
+from zipfile import ZipFile
+
+from packaging.tags import Tag
+from packaging.utils import parse_wheel_filename
+from packaging.version import Version
+
+
+def check_is_abi3_compatible(wheel_file: str) -> None:
+    """Check the contents of the built wheel for any `.so` files that are *not*
+    abi3 compatible.
+    """
+
+    with ZipFile(wheel_file, "r") as wheel:
+        for file in wheel.namelist():
+            if not file.endswith(".so"):
+                continue
+
+            if not file.endswith(".abi3.so"):
+                raise Exception(f"Found non-abi3 lib: {file}")
+
+
+def cpython(wheel_file: str, name: str, version: Version, tag: Tag) -> str:
+    """Replaces the cpython wheel file with a ABI3 compatible wheel"""
+
+    if tag.abi == "abi3":
+        # Nothing to do.
+        return wheel_file
+
+    check_is_abi3_compatible(wheel_file)
+
+    # HACK: it seems that some older versions of pip will consider a wheel marked
+    # as macosx_11_0 as incompatible with Big Sur. I haven't done the full archaeology
+    # here; there are some clues in
+    #     https://github.com/pantsbuild/pants/pull/12857
+    #     https://github.com/pypa/pip/issues/9138
+    #     https://github.com/pypa/packaging/pull/319
+    # Empirically this seems to work, note that macOS 11 and 10.16 are the same,
+    # both versions are valid for backwards compatibility.
+    platform = tag.platform.replace("macosx_11_0", "macosx_10_16")
+    abi3_tag = Tag(tag.interpreter, "abi3", platform)
+
+    dirname = os.path.dirname(wheel_file)
+    new_wheel_file = os.path.join(
+        dirname,
+        f"{name}-{version}-{abi3_tag}.whl",
+    )
+
+    os.rename(wheel_file, new_wheel_file)
+
+    print("Renamed wheel to", new_wheel_file)
+
+    return new_wheel_file
+
+
+def main(wheel_file: str, dest_dir: str, archs: str | None) -> None:
+    """Entry point"""
+
+    # Parse the wheel file name into its parts. Note that `parse_wheel_filename`
+    # normalizes the package name (i.e. it converts matrix_synapse ->
+    # matrix-synapse), which is not what we want.
+    _, version, build, tags = parse_wheel_filename(os.path.basename(wheel_file))
+    name = os.path.basename(wheel_file).split("-")[0]
+
+    if len(tags) != 1:
+        # We expect only a wheel file with only a single tag
+        raise Exception(f"Unexpectedly found multiple tags: {tags}")
+
+    tag = next(iter(tags))
+
+    if build:
+        # We don't use build tags in Synapse
+        raise Exception(f"Unexpected build tag: {build}")
+
+    # If the wheel is for cpython then convert it into an abi3 wheel.
+    if tag.interpreter.startswith("cp"):
+        wheel_file = cpython(wheel_file, name, version, tag)
+
+    # Finally, repair the wheel.
+    if archs is not None:
+        # If we are given archs then we are on macos and need to use
+        # `delocate-listdeps`.
+        subprocess.run(["delocate-listdeps", wheel_file], check=True)
+        subprocess.run(
+            ["delocate-wheel", "--require-archs", archs, "-w", dest_dir, wheel_file],
+            check=True,
+        )
+    else:
+        subprocess.run(["auditwheel", "repair", "-w", dest_dir, wheel_file], check=True)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Tag wheel as abi3 and repair it.")
+
+    parser.add_argument(
+        "--wheel-dir",
+        "-w",
+        metavar="WHEEL_DIR",
+        help="Directory to store delocated wheels",
+        required=True,
+    )
+
+    parser.add_argument(
+        "--require-archs",
+        metavar="archs",
+        default=None,
+    )
+
+    parser.add_argument(
+        "wheel_file",
+        metavar="WHEEL_FILE",
+    )
+
+    args = parser.parse_args()
+
+    wheel_file = args.wheel_file
+    wheel_dir = args.wheel_dir
+    archs = args.require_archs
+
+    main(wheel_file, wheel_dir, archs)

.ci/scripts/calculate_jobs.py

@@ -35,55 +35,46 @@ IS_PR = os.environ["GITHUB_REF"].startswith("refs/pull/")
 
 # First calculate the various trial jobs.
 #
-# For PRs, we only run each type of test with the oldest and newest Python
-# version that's supported. The oldest version ensures we don't accidentally
-# introduce syntax or code that's too new, and the newest ensures we don't use
-# code that's been dropped in the latest supported Python version.
+# For PRs, we only run each type of test with the oldest Python version supported (which
+# is Python 3.10 right now)
 
 trial_sqlite_tests = [
     {
         "python-version": "3.10",
         "database": "sqlite",
         "extras": "all",
-    },
-    {
-        "python-version": "3.14",
-        "database": "sqlite",
-        "extras": "all",
-    },
+    }
 ]
 
 if not IS_PR:
-    # Otherwise, check all supported Python versions.
-    #
-    # Avoiding running all of these versions on every PR saves on CI time.
     trial_sqlite_tests.extend(
         {
             "python-version": version,
             "database": "sqlite",
             "extras": "all",
         }
-        for version in ("3.11", "3.12", "3.13")
+        for version in ("3.11", "3.12", "3.13", "3.14")
     )
 
-# Only test postgres against the earliest and latest Python versions that we
-# support in order to save on CI time.
 trial_postgres_tests = [
     {
         "python-version": "3.10",
         "database": "postgres",
-        "postgres-version": "14",
+        "postgres-version": "13",
         "extras": "all",
-    },
-    {
-        "python-version": "3.14",
-        "database": "postgres",
-        "postgres-version": "17",
-        "extras": "all",
-    },
+    }
 ]
 
-# Ensure that Synapse passes unit tests even with no extra dependencies installed.
+if not IS_PR:
+    trial_postgres_tests.append(
+        {
+            "python-version": "3.14",
+            "database": "postgres",
+            "postgres-version": "17",
+            "extras": "all",
+        }
+    )
+
 trial_no_extra_tests = [
     {
         "python-version": "3.10",

.ci/scripts/prepare_old_deps.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+# this script is run by GitHub Actions in a plain `jammy` container; it
+# - installs the minimal system requirements, and poetry;
+# - patches the project definition file to refer to old versions only;
+# - creates a venv with these old versions using poetry; and finally
+# - invokes `trial` to run the tests with old deps.
+
+set -ex
+
+# Prevent virtualenv from auto-updating pip to an incompatible version
+export VIRTUALENV_NO_DOWNLOAD=1
+
+# TODO: in the future, we could use an implementation of
+#   https://github.com/python-poetry/poetry/issues/3527
+#   https://github.com/pypa/pip/issues/8085
+# to select the lowest possible versions, rather than resorting to this sed script.
+
+# Patch the project definitions in-place:
+# - Replace all lower and tilde bounds with exact bounds
+# - Replace all caret bounds---but not the one that defines the supported Python version!
+# - Delete all lines referring to psycopg2 --- so no testing of postgres support.
+# - Use pyopenssl 17.0, which is the oldest version that works with
+#   a `cryptography` compiled against OpenSSL 1.1.
+# - Omit systemd: we're not logging to journal here.
+
+sed -i \
+   -e "s/[~>]=/==/g" \
+   -e '/^python = "^/!s/\^/==/g' \
+   -e "/psycopg2/d" \
+   -e 's/pyOpenSSL = "==16.0.0"/pyOpenSSL = "==17.0.0"/' \
+   -e '/systemd/d' \
+   pyproject.toml
+
+echo "::group::Patched pyproject.toml"
+cat pyproject.toml
+echo "::endgroup::"

.git-blame-ignore-revs

@@ -26,8 +26,3 @@ c4268e3da64f1abb5b31deaeb5769adb6510c0a7
 # Update black to 23.1.0 (https://github.com/matrix-org/synapse/pull/15103)
 9bb2eac71962970d02842bca441f4bcdbbf93a11
 
-# Use type hinting generics in standard collections (https://github.com/element-hq/synapse/pull/19046)
-fc244bb592aa481faf28214a2e2ce3bb4e95d990
-
-# Write union types as X | Y where possible (https://github.com/element-hq/synapse/pull/19111)
-fcac7e0282b074d4bd3414d1c9c181e9701875d9

.github/dependabot.yml

@@ -1,92 +1,23 @@
 version: 2
-# As dependabot is currently only run on a weekly basis, we raise the
-# open-pull-requests-limit to 10 (from the default of 5) to better ensure we
-# don't continuously grow a backlog of updates.
 updates:
   - # "pip" is the correct setting for poetry, per https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#package-ecosystem
     package-ecosystem: "pip"
     directory: "/"
-    open-pull-requests-limit: 10
     schedule:
       interval: "weekly"
-    # Group patch updates to packages together into a single PR, as they rarely
-    # if ever contain breaking changes that need to be reviewed separately.
-    # 
-    # Less PRs means a streamlined review process.
-    #
-    # Python packages follow semantic versioning, and tend to only introduce
-    # breaking changes in major version bumps. Thus, we'll group minor and patch
-    # versions together.
-    groups:
-      minor-and-patches:
-        applies-to: version-updates
-        patterns:
-          - "*"
-        update-types:
-          - "minor"
-          - "patch"
-    # Prevent pulling packages that were recently updated to help mitigate
-    # supply chain attacks. 14 days was taken from the recommendation at
-    # https://blog.yossarian.net/2025/11/21/We-should-all-be-using-dependency-cooldowns
-    # where the author noted that 9/10 attacks would have been mitigated by a
-    # two week cooldown.
-    #
-    # The cooldown only applies to general updates; security updates will still
-    # be pulled in as soon as possible.
-    cooldown:
-      default-days: 14
 
   - package-ecosystem: "docker"
     directory: "/docker"
-    open-pull-requests-limit: 10
     schedule:
       interval: "weekly"
-    # For container versions, breaking changes are also typically only introduced in major
-    # package bumps.
-    groups:
-      minor-and-patches:
-        applies-to: version-updates
-        patterns:
-          - "*"
-        update-types:
-          - "minor"
-          - "patch"
-    cooldown:
-      default-days: 14
 
   - package-ecosystem: "github-actions"
     directory: "/"
-    open-pull-requests-limit: 10
     schedule:
       interval: "weekly"
-    # Similarly for GitHub Actions, breaking changes are typically only introduced in major
-    # package bumps.
-    groups:
-      minor-and-patches:
-        applies-to: version-updates
-        patterns:
-          - "*"
-        update-types:
-          - "minor"
-          - "patch"
-    cooldown:
-      default-days: 14
 
   - package-ecosystem: "cargo"
     directory: "/"
-    open-pull-requests-limit: 10
     versioning-strategy: "lockfile-only"
     schedule:
       interval: "weekly"
-    # The Rust ecosystem is special in that breaking changes are often introduced
-    # in minor version bumps, as packages typically stay pre-1.0 for a long time.
-    # Thus we specifically keep minor version bumps separate in their own PRs.
-    groups:
-      patches:
-        applies-to: version-updates
-        patterns:
-          - "*"
-        update-types:
-          - "patch"
-    cooldown:
-      default-days: 14

.github/workflows/docker.yml

@@ -31,7 +31,7 @@ jobs:
         uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
 
       - name: Checkout repository
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Extract version from pyproject.toml
         # Note: explicitly requesting bash will mean bash is invoked with `-eo pipefail`, see
@@ -123,7 +123,7 @@ jobs:
         uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
 
       - name: Calculate docker image tag
-        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051 # v5.10.0
+        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f # v5.8.0
         with:
           images: ${{ matrix.repository }}
           flavor: |

.github/workflows/docs-pr-netlify.yaml

@@ -0,0 +1,34 @@
+name: Deploy documentation PR preview
+
+on:
+  workflow_run:
+    workflows: [ "Prepare documentation PR preview" ]
+    types:
+      - completed
+
+jobs:
+  netlify:
+    if: github.event.workflow_run.conclusion == 'success' && github.event.workflow_run.event == 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+      # There's a 'download artifact' action, but it hasn't been updated for the workflow_run action
+      # (https://github.com/actions/download-artifact/issues/60) so instead we get this mess:
+      - name: 📥 Download artifact
+        uses: dawidd6/action-download-artifact@ac66b43f0e6a346234dd65d4d0c8fbb31cb316e5 # v11
+        with:
+          workflow: docs-pr.yaml
+          run_id: ${{ github.event.workflow_run.id }}
+          name: book
+          path: book
+
+      - name: 📤 Deploy to Netlify
+        uses: matrix-org/netlify-pr-preview@9805cd123fc9a7e421e35340a05e1ebc5dee46b5 # v3
+        with:
+          path: book
+          owner: ${{ github.event.workflow_run.head_repository.owner.login }}
+          branch: ${{ github.event.workflow_run.head_branch }}
+          revision: ${{ github.event.workflow_run.head_sha }}
+          token: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+          site_id: ${{ secrets.NETLIFY_SITE_ID }}
+          desc: Documentation preview
+          deployment_env: PR Documentation Preview

.github/workflows/docs-pr.yaml

@@ -13,7 +13,7 @@ jobs:
     name: GitHub Pages
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           # Fetch all history so that the schema_versions script works.
           fetch-depth: 0
@@ -24,7 +24,7 @@ jobs:
           mdbook-version: '0.4.17'
 
       - name: Setup python
-        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
 
@@ -50,7 +50,7 @@ jobs:
     name: Check links in documentation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Setup mdbook
         uses: peaceiris/actions-mdbook@ee69d230fe19748b7abf22df32acaa93833fad08 # v2.0.0

.github/workflows/docs.yaml

@@ -50,7 +50,7 @@ jobs:
     needs:
       - pre
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           # Fetch all history so that the schema_versions script works.
           fetch-depth: 0
@@ -64,7 +64,7 @@ jobs:
         run: echo 'window.SYNAPSE_VERSION = "${{ needs.pre.outputs.branch-version }}";' > ./docs/website_files/version.js
 
       - name: Setup python
-        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
 

.github/workflows/fix_lint.yaml

@@ -18,14 +18,14 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
           components: clippy, rustfmt
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - name: Setup Poetry
         uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0

.github/workflows/latest_deps.yml

@@ -42,12 +42,12 @@ jobs:
     if: needs.check_repo.outputs.should_run_workflow == 'true'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       # The dev dependencies aren't exposed in the wheel metadata (at least with current
       # poetry-core versions), so we install with poetry.
@@ -77,13 +77,13 @@ jobs:
             postgres-version: "14"
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - run: sudo apt-get -qq install xmlsec1
       - name: Set up PostgreSQL ${{ matrix.postgres-version }}
@@ -93,7 +93,7 @@ jobs:
             -e POSTGRES_PASSWORD=postgres \
             -e POSTGRES_INITDB_ARGS="--lc-collate C --lc-ctype C --encoding UTF8" \
             postgres:${{ matrix.postgres-version }}
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - run: pip install .[all,test]
@@ -152,13 +152,13 @@ jobs:
       BLACKLIST: ${{ matrix.workers && 'synapse-blacklist-with-workers' }}
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - name: Ensure sytest runs `pip install`
         # Delete the lockfile so sytest will `pip install` rather than `poetry install`
@@ -202,14 +202,14 @@ jobs:
 
     steps:
       - name: Check out synapse codebase
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: synapse
 
       - name: Prepare Complement's Prerequisites
         run: synapse/.ci/scripts/setup_complement_prerequisites.sh
 
-      - uses: actions/setup-go@4dc6199c7b1a012772edbd06daecab0f50c9053c # v6.1.0
+      - uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00 # v6.0.0
         with:
           cache-dependency-path: complement/go.sum
           go-version-file: complement/go.mod
@@ -234,7 +234,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - uses: JasonEtco/create-an-issue@1b14a70e4d8dc185e5cc76d3bec9eab20257b2c5 # v2.9.2
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/poetry_lockfile.yaml

@@ -16,8 +16,8 @@ jobs:
     name: "Check locked dependencies have sdists"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: '3.x'
       - run: pip install tomli

.github/workflows/push_complement_image.yml

@@ -33,17 +33,17 @@ jobs:
       packages: write
     steps:
       - name: Checkout specific branch (debug build)
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         if: github.event_name == 'workflow_dispatch'
         with:
           ref: ${{ inputs.branch }}
       - name: Checkout clean copy of develop (scheduled build)
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         if: github.event_name == 'schedule'
         with:
           ref: develop
       - name: Checkout clean copy of master (on-push)
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         if: github.event_name == 'push'
         with:
           ref: master
@@ -55,7 +55,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Work out labels for complement image
         id: meta
-        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051 # v5.10.0
+        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f # v5.8.0
         with:
           images: ghcr.io/${{ github.repository }}/complement-synapse
           tags: |

.github/workflows/release-artifacts.yml

@@ -5,7 +5,7 @@ name: Build release artifacts
 on:
   # we build on PRs and develop to (hopefully) get early warning
   # of things breaking (but only build one set of debs). PRs skip
-  # building wheels on ARM.
+  # building wheels on macOS & ARM.
   pull_request:
   push:
     branches: ["develop", "release-*"]
@@ -27,8 +27,8 @@ jobs:
     name: "Calculate list of debian distros"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - id: set-distros
@@ -55,7 +55,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: src
 
@@ -74,7 +74,7 @@ jobs:
             ${{ runner.os }}-buildx-
 
       - name: Set up python
-        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
 
@@ -114,20 +114,27 @@ jobs:
         os:
           - ubuntu-24.04
           - ubuntu-24.04-arm
+          - macos-14 # This uses arm64
+          - macos-15-intel # This uses x86-64
         # is_pr is a flag used to exclude certain jobs from the matrix on PRs.
         # It is not read by the rest of the workflow.
         is_pr:
           - ${{ startsWith(github.ref, 'refs/pull/') }}
 
         exclude:
+          # Don't build macos wheels on PR CI.
+          - is_pr: true
+            os: "macos-15-intel"
+          - is_pr: true
+            os: "macos-14"
           # Don't build aarch64 wheels on PR CI.
           - is_pr: true
             os: "ubuntu-24.04-arm"
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           # setup-python@v4 doesn't impose a default python version. Need to use 3.x
           # here, because `python` on osx points to Python 2.7.
@@ -143,14 +150,12 @@ jobs:
       - name: Build wheels
         run: python -m cibuildwheel --output-dir wheelhouse
         env:
-          # The platforms that we build for are determined by the
-          # `tool.cibuildwheel.skip` option in `pyproject.toml`.
-
-          # We skip testing wheels for the following platforms in CI:
+          # Skip testing for platforms which various libraries don't have wheels
+          # for, and so need extra build deps.
           #
-          # pp3*-* (PyPy wheels) broke in CI (TODO: investigate).
-          # musl: (TODO: investigate).
-          CIBW_TEST_SKIP: pp3*-* *musl*
+          # cp39-*: Python 3.9 is EOL.
+          # cp3??t-*: Free-threaded builds are not currently supported.
+          CIBW_TEST_SKIP: pp3*-* cp39-* cp3??t-* *i686* *musl*
 
       - uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
         with:
@@ -163,8 +168,8 @@ jobs:
     if: ${{ !startsWith(github.ref, 'refs/pull/') }}
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.10"
 

.github/workflows/schema.yaml

@@ -14,8 +14,8 @@ jobs:
     name: Ensure Synapse config schema is valid
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - name: Install check-jsonschema
@@ -40,8 +40,8 @@ jobs:
     name: Ensure generated documentation is up-to-date
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - name: Install PyYAML

.github/workflows/tests.yml

@@ -86,12 +86,12 @@ jobs:
     if: ${{ needs.changes.outputs.linting == 'true' }}
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
         with:
           python-version: "3.x"
@@ -106,18 +106,18 @@ jobs:
     if: ${{ needs.changes.outputs.linting == 'true' }}
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
-      - run: "pip install 'click==8.1.1' 'GitPython>=3.1.20' 'sqlglot>=28.0.0'"
+      - run: "pip install 'click==8.1.1' 'GitPython>=3.1.20'"
       - run: scripts-dev/check_schema_delta.py --force-colors
 
   check-lockfile:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - run: .ci/scripts/check_lockfile.py
@@ -129,7 +129,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Setup Poetry
         uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
@@ -151,13 +151,13 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - name: Setup Poetry
         uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
@@ -187,20 +187,19 @@ jobs:
   lint-crlf:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Check line endings
         run: scripts-dev/check_line_terminators.sh
 
   lint-newsfile:
-    # Only run on pull_request events, targeting develop/release branches, and skip when the PR author is dependabot[bot].
-    if: ${{ github.event_name == 'pull_request' && (github.base_ref == 'develop' || contains(github.base_ref, 'release-')) && github.event.pull_request.user.login != 'dependabot[bot]' }}
+    if: ${{ (github.base_ref == 'develop'  || contains(github.base_ref, 'release-')) && github.actor != 'dependabot[bot]' }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           fetch-depth: 0
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - run: "pip install 'towncrier>=18.6.0rc1'"
@@ -214,14 +213,14 @@ jobs:
     if: ${{ needs.changes.outputs.rust == 'true' }}
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
             components: clippy
             toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - run: cargo clippy -- -D warnings
 
@@ -233,14 +232,14 @@ jobs:
     if: ${{ needs.changes.outputs.rust == 'true' }}
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
             toolchain: nightly-2025-04-23
             components: clippy
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - run: cargo clippy --all-features -- -D warnings
 
@@ -251,13 +250,13 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - name: Setup Poetry
         uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
@@ -287,7 +286,7 @@ jobs:
     if: ${{ needs.changes.outputs.rust == 'true' }}
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
@@ -296,7 +295,7 @@ jobs:
           # `.rustfmt.toml`.
           toolchain: nightly-2025-04-23
           components: rustfmt
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - run: cargo fmt --check
 
@@ -307,8 +306,8 @@ jobs:
     needs: changes
     if: ${{ needs.changes.outputs.linting_readme == 'true' }}
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - run: "pip install rstcheck"
@@ -355,8 +354,8 @@ jobs:
     needs: linting-done
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - id: get-matrix
@@ -376,7 +375,7 @@ jobs:
         job:  ${{ fromJson(needs.calculate-test-jobs.outputs.trial_test_matrix) }}
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - run: sudo apt-get -qq install xmlsec1
       - name: Set up PostgreSQL ${{ matrix.job.postgres-version }}
         if: ${{ matrix.job.postgres-version }}
@@ -394,7 +393,7 @@ jobs:
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
         with:
@@ -432,13 +431,13 @@ jobs:
       - changes
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       # There aren't wheels for some of the older deps, so we need to install
       # their build dependencies
@@ -447,17 +446,19 @@ jobs:
           sudo apt-get -qq install build-essential libffi-dev python3-dev \
             libxml2-dev libxslt-dev xmlsec1 zlib1g-dev libjpeg-dev libwebp-dev
 
-      - uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: '3.10'
 
       - name: Prepare old deps
-        # Note: we install using `uv` here, not poetry or pip to allow us to test with the
-        # minimum version of all dependencies, both those explicitly specified and those
-        # implicitly brought in by the explicit dependencies. 
-        run: |
-          pip install uv
-          uv pip install --system --resolution=lowest .[all,test]
+        if: steps.cache-poetry-old-deps.outputs.cache-hit != 'true'
+        run: .ci/scripts/prepare_old_deps.sh
+
+      # Note: we install using `pip` here, not poetry. `poetry install` ignores the
+      # build-system section (https://github.com/python-poetry/poetry/issues/6154), but
+      # we explicitly want to test that you can `pip install` using the oldest version
+      # of poetry-core and setuptools-rust.
+      - run: pip install .[all,test]
 
       # We nuke the local copy, as we've installed synapse into the virtualenv
       # (rather than use an editable install, which we no longer support). If we
@@ -495,7 +496,7 @@ jobs:
         extras: ["all"]
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       # Install libs necessary for PyPy to build binary wheels for dependencies
       - run: sudo apt-get -qq install xmlsec1 libxml2-dev libxslt-dev
       - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
@@ -545,7 +546,7 @@ jobs:
         job: ${{ fromJson(needs.calculate-test-jobs.outputs.sytest_test_matrix) }}
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Prepare test blacklist
         run: cat sytest-blacklist .ci/worker-blacklist > synapse-blacklist-with-workers
 
@@ -553,7 +554,7 @@ jobs:
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - name: Run SyTest
         run: /bootstrap.sh synapse
@@ -592,7 +593,7 @@ jobs:
           --health-retries 5
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - run: sudo apt-get -qq install xmlsec1 postgresql-client
       - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
         with:
@@ -616,7 +617,7 @@ jobs:
       matrix:
         include:
           - python-version: "3.10"
-            postgres-version: "14"
+            postgres-version: "13"
 
           - python-version: "3.14"
             postgres-version: "17"
@@ -636,7 +637,7 @@ jobs:
           --health-retries 5
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Add PostgreSQL apt repository
         # We need a version of pg_dump that can handle the version of
         # PostgreSQL being tested against. The Ubuntu package repository lags
@@ -691,7 +692,7 @@ jobs:
 
     steps:
       - name: Checkout synapse codebase
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: synapse
 
@@ -699,12 +700,12 @@ jobs:
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - name: Prepare Complement's Prerequisites
         run: synapse/.ci/scripts/setup_complement_prerequisites.sh
 
-      - uses: actions/setup-go@4dc6199c7b1a012772edbd06daecab0f50c9053c # v6.1.0
+      - uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00 # v6.0.0
         with:
           cache-dependency-path: complement/go.sum
           go-version-file: complement/go.mod
@@ -727,13 +728,13 @@ jobs:
       - changes
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - run: cargo test
 
@@ -747,13 +748,13 @@ jobs:
       - changes
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
             toolchain: nightly-2022-12-01
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - run: cargo bench --no-run
 

.github/workflows/triage_labelled.yml

@@ -22,7 +22,7 @@ jobs:
       # This field is case-sensitive.
       TARGET_STATUS: Needs info
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           # Only clone the script file we care about, instead of the whole repo.
           sparse-checkout: .ci/scripts/triage_labelled_issue.sh

.github/workflows/twisted_trunk.yml

@@ -43,13 +43,13 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
         with:
@@ -70,14 +70,14 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - run: sudo apt-get -qq install xmlsec1
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
         with:
@@ -117,13 +117,13 @@ jobs:
         - ${{ github.workspace }}:/src
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - name: Patch dependencies
         # Note: The poetry commands want to create a virtualenv in /src/.venv/,
@@ -175,14 +175,14 @@ jobs:
 
     steps:
       - name: Run actions/checkout@v4 for synapse
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: synapse
 
       - name: Prepare Complement's Prerequisites
         run: synapse/.ci/scripts/setup_complement_prerequisites.sh
 
-      - uses: actions/setup-go@4dc6199c7b1a012772edbd06daecab0f50c9053c # v6.1.0
+      - uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00 # v6.0.0
         with:
           cache-dependency-path: complement/go.sum
           go-version-file: complement/go.mod
@@ -217,7 +217,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - uses: JasonEtco/create-an-issue@1b14a70e4d8dc185e5cc76d3bec9eab20257b2c5 # v2.9.2
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

CHANGES.md

@@ -1,180 +1,4 @@
-# Synapse 1.144.0 (2025-12-09)
-
-## Deprecation of MacOS Python wheels
-
-The team has decided to deprecate and stop publishing python wheels for MacOS.
-Synapse docker images will continue to work on MacOS, as will building Synapse
-from source (though note this requires a Rust compiler).
-
-## Unstable mutual rooms endpoint is now behind an experimental feature flag
-
-Admins using the unstable [MSC2666](https://github.com/matrix-org/matrix-spec-proposals/pull/2666) endpoint (`/_matrix/client/unstable/uk.half-shot.msc2666/user/mutual_rooms`),
-please check [the relevant section in the upgrade notes](https://github.com/element-hq/synapse/blob/develop/docs/upgrade.md#upgrading-to-v11440) as this release contains changes
-that disable that endpoint by default.
-
-
-
-No significant changes since 1.144.0rc1.
-
-
-
-
-# Synapse 1.144.0rc1 (2025-12-02)
-
-Admins using the unstable [MSC2666](https://github.com/matrix-org/matrix-spec-proposals/pull/2666) endpoint (`/_matrix/client/unstable/uk.half-shot.msc2666/user/mutual_rooms`), please check [the relevant section in the upgrade notes](https://github.com/element-hq/synapse/blob/develop/docs/upgrade.md#upgrading-to-v11440) as this release contains changes that disable that endpoint by default.
-
-## Features
-
-- Add experimentatal implememntation of [MSC4380](https://github.com/matrix-org/matrix-spec-proposals/pull/4380) (invite blocking). ([\#19203](https://github.com/element-hq/synapse/issues/19203))
-- Allow restarting delayed event timeouts on workers. ([\#19207](https://github.com/element-hq/synapse/issues/19207))
-
-## Bugfixes
-
-- Fix a bug in the database function for fetching state deltas that could result in unnecessarily long query times. ([\#18960](https://github.com/element-hq/synapse/issues/18960))
-- Fix v12 rooms when running with `use_frozen_dicts: True`. ([\#19235](https://github.com/element-hq/synapse/issues/19235))
-- Fix bug where invalid `canonical_alias` content would return 500 instead of 400. ([\#19240](https://github.com/element-hq/synapse/issues/19240))
-- Fix bug where `Duration` was logged incorrectly. ([\#19267](https://github.com/element-hq/synapse/issues/19267))
-
-## Improved Documentation
-
-- Document in the `--config-path` help how multiple files are merged - by merging them shallowly. ([\#19243](https://github.com/element-hq/synapse/issues/19243))
-
-## Deprecations and Removals
-
-- Stop building release wheels for MacOS. ([\#19225](https://github.com/element-hq/synapse/issues/19225))
-
-## Internal Changes
-
-- Improve event filtering for Simplified Sliding Sync. ([\#17782](https://github.com/element-hq/synapse/issues/17782))
-- Export `SYNAPSE_SUPPORTED_COMPLEMENT_TEST_PACKAGES` environment variable from `scripts-dev/complement.sh`. ([\#19208](https://github.com/element-hq/synapse/issues/19208))
-- Refactor `scripts-dev/complement.sh` logic to avoid `exit` to facilitate being able to source it from other scripts (composable). ([\#19209](https://github.com/element-hq/synapse/issues/19209))
-- Expire sliding sync connections that are too old or have too much pending data. ([\#19211](https://github.com/element-hq/synapse/issues/19211))
-- Require an experimental feature flag to be enabled in order for the unstable [MSC2666](https://github.com/matrix-org/matrix-spec-proposals/pull/2666) endpoint (`/_matrix/client/unstable/uk.half-shot.msc2666/user/mutual_rooms`) to be available. ([\#19219](https://github.com/element-hq/synapse/issues/19219))
-- Prevent changelog check CI running on @dependabot's PRs even when a human has modified the branch. ([\#19220](https://github.com/element-hq/synapse/issues/19220))
-- Auto-fix trailing spaces in multi-line strings and comments when running the lint script. ([\#19221](https://github.com/element-hq/synapse/issues/19221))
-- Move towards using a dedicated `Duration` type. ([\#19223](https://github.com/element-hq/synapse/issues/19223), [\#19229](https://github.com/element-hq/synapse/issues/19229))
-- Improve robustness of the SQL schema linting in CI. ([\#19224](https://github.com/element-hq/synapse/issues/19224))
-- Add log to determine whether clients are using `/messages` as expected. ([\#19226](https://github.com/element-hq/synapse/issues/19226))
-- Simplify README and add ESS Getting started section. ([\#19228](https://github.com/element-hq/synapse/issues/19228), [\#19259](https://github.com/element-hq/synapse/issues/19259))
-- Add a unit test for ensuring associated refresh tokens are erased when a device is deleted. ([\#19230](https://github.com/element-hq/synapse/issues/19230))
-- Prompt user to consider adding future deprecations to the changelog in release script. ([\#19239](https://github.com/element-hq/synapse/issues/19239))
-- Fix check of the Rust compiled code being outdated when using source checkout and `.egg-info`. ([\#19251](https://github.com/element-hq/synapse/issues/19251))
-- Stop building macos wheels in CI pipeline. ([\#19263](https://github.com/element-hq/synapse/issues/19263))
-
-
-
-### Updates to locked dependencies
-
-* Bump Swatinem/rust-cache from 2.8.1 to 2.8.2. ([\#19244](https://github.com/element-hq/synapse/issues/19244))
-* Bump actions/checkout from 5.0.0 to 6.0.0. ([\#19213](https://github.com/element-hq/synapse/issues/19213))
-* Bump actions/setup-go from 6.0.0 to 6.1.0. ([\#19214](https://github.com/element-hq/synapse/issues/19214))
-* Bump actions/setup-python from 6.0.0 to 6.1.0. ([\#19245](https://github.com/element-hq/synapse/issues/19245))
-* Bump attrs from 25.3.0 to 25.4.0. ([\#19215](https://github.com/element-hq/synapse/issues/19215))
-* Bump docker/metadata-action from 5.9.0 to 5.10.0. ([\#19246](https://github.com/element-hq/synapse/issues/19246))
-* Bump http from 1.3.1 to 1.4.0. ([\#19249](https://github.com/element-hq/synapse/issues/19249))
-* Bump pydantic from 2.12.4 to 2.12.5. ([\#19250](https://github.com/element-hq/synapse/issues/19250))
-* Bump pyopenssl from 25.1.0 to 25.3.0. ([\#19248](https://github.com/element-hq/synapse/issues/19248))
-* Bump rpds-py from 0.28.0 to 0.29.0. ([\#19216](https://github.com/element-hq/synapse/issues/19216))
-* Bump rpds-py from 0.29.0 to 0.30.0. ([\#19247](https://github.com/element-hq/synapse/issues/19247))
-* Bump sentry-sdk from 2.44.0 to 2.46.0. ([\#19218](https://github.com/element-hq/synapse/issues/19218))
-* Bump types-bleach from 6.2.0.20250809 to 6.3.0.20251115. ([\#19217](https://github.com/element-hq/synapse/issues/19217))
-* Bump types-jsonschema from 4.25.1.20250822 to 4.25.1.20251009. ([\#19252](https://github.com/element-hq/synapse/issues/19252))
-
-# Synapse 1.143.0 (2025-11-25)
-
-## Dropping support for PostgreSQL 13
-
-In line with our [deprecation policy](https://github.com/element-hq/synapse/blob/develop/docs/deprecation_policy.md), we've dropped
-support for PostgreSQL 13, as it is no longer supported upstream.
-This release of Synapse requires PostgreSQL 14+.
-
-No significant changes since 1.143.0rc2.
-
-
-
-
-# Synapse 1.143.0rc2 (2025-11-18)
-
-## Dropping support for PostgreSQL 13
-
-In line with our [deprecation policy](https://github.com/element-hq/synapse/blob/develop/docs/deprecation_policy.md), we've dropped
-support for PostgreSQL 13, as it is no longer supported upstream.
-This release of Synapse requires PostgreSQL 14+.
-
-
-## Internal Changes
-
-- Fixes docker image creation in the release workflow.
-
-
-
-# Synapse 1.143.0rc1 (2025-11-18)
-
-## Features
-
-- Support multiple config files in `register_new_matrix_user`. ([\#18784](https://github.com/element-hq/synapse/issues/18784))
-- Remove authentication from `POST /_matrix/client/v1/delayed_events`, and allow calling this endpoint with the update action to take (`send`/`cancel`/`restart`) in the request path instead of the body. ([\#19152](https://github.com/element-hq/synapse/issues/19152))
-
-## Bugfixes
-
-- Fixed a longstanding bug where background updates were only run on the `main` database. ([\#19181](https://github.com/element-hq/synapse/issues/19181))
-- Fixed a bug introduced in v1.142.0 preventing subpaths in MAS endpoints from working. ([\#19186](https://github.com/element-hq/synapse/issues/19186))
-- Fix the SQLite-to-PostgreSQL migration script to correctly migrate a boolean column in the `delayed_events` table. ([\#19155](https://github.com/element-hq/synapse/issues/19155))
-
-## Improved Documentation
-
-- Improve documentation around streams, particularly ID generators and adding new streams. ([\#18943](https://github.com/element-hq/synapse/issues/18943))
-
-## Deprecations and Removals
-
-- Remove support for PostgreSQL 13. ([\#19170](https://github.com/element-hq/synapse/issues/19170))
-
-## Internal Changes
-
-- Provide additional servers with federation room directory results. ([\#18970](https://github.com/element-hq/synapse/issues/18970))
-- Add a shortcut return when there are no events to purge. ([\#19093](https://github.com/element-hq/synapse/issues/19093))
-- Write union types as `X | Y` where possible, as per PEP 604, added in Python 3.10. ([\#19111](https://github.com/element-hq/synapse/issues/19111))
-- Reduce cardinality of `synapse_storage_events_persisted_events_sep_total` metric by removing `origin_entity` label. This also separates out events sent by local application services by changing the `origin_type` for such events to `application_service`. The `type` field also only tracks common event types, and anything else is bucketed under `*other*`. ([\#19133](https://github.com/element-hq/synapse/issues/19133), [\#19168](https://github.com/element-hq/synapse/issues/19168))
-- Run trial tests on Python 3.14 for PRs. ([\#19135](https://github.com/element-hq/synapse/issues/19135))
-- Update `pyproject.toml` project metadata to be compatible with standard Python packaging tooling. ([\#19137](https://github.com/element-hq/synapse/issues/19137))
-- Minor speed up of processing of inbound replication. ([\#19138](https://github.com/element-hq/synapse/issues/19138), [\#19145](https://github.com/element-hq/synapse/issues/19145), [\#19146](https://github.com/element-hq/synapse/issues/19146))
-- Ignore recent Python language refactors from git blame (`.git-blame-ignore-revs`). ([\#19150](https://github.com/element-hq/synapse/issues/19150))
-- Bump lower bounds of dependencies `parameterized` to `0.9.0` and `idna` to `3.3` as those are the first to advertise support for Python 3.10. ([\#19167](https://github.com/element-hq/synapse/issues/19167))
-- Point out which event caused the exception when checking [MSC4293](https://github.com/matrix-org/matrix-spec-proposals/pull/4293) redactions. ([\#19169](https://github.com/element-hq/synapse/issues/19169))
-- Restore printing `sentinel` for the log record `request` when no logcontext is active. ([\#19172](https://github.com/element-hq/synapse/issues/19172))
-- Add debug logs to track `Clock` utilities. ([\#19173](https://github.com/element-hq/synapse/issues/19173))
-- Remove explicit python version skips in `cibuildwheel` config as it's no longer required after [#19137](https://github.com/element-hq/synapse/pull/19137). ([\#19177](https://github.com/element-hq/synapse/issues/19177))
-- Fix potential lost logcontext when `PerDestinationQueue.shutdown(...)` is called. ([\#19178](https://github.com/element-hq/synapse/issues/19178))
-- Fix bad deferred logcontext handling across the codebase. ([\#19180](https://github.com/element-hq/synapse/issues/19180))
-
-
-
-### Updates to locked dependencies
-
-* Bump bytes from 1.10.1 to 1.11.0. ([\#19193](https://github.com/element-hq/synapse/issues/19193))
-* Bump click from 8.1.8 to 8.3.1. ([\#19195](https://github.com/element-hq/synapse/issues/19195))
-* Bump cryptography from 43.0.3 to 45.0.7. ([\#19159](https://github.com/element-hq/synapse/issues/19159))
-* Bump docker/metadata-action from 5.8.0 to 5.9.0. ([\#19161](https://github.com/element-hq/synapse/issues/19161))
-* Bump pydantic from 2.12.3 to 2.12.4. ([\#19158](https://github.com/element-hq/synapse/issues/19158))
-* Bump pyo3-log from 0.13.1 to 0.13.2. ([\#19156](https://github.com/element-hq/synapse/issues/19156))
-* Bump ruff from 0.14.3 to 0.14.5. ([\#19196](https://github.com/element-hq/synapse/issues/19196))
-* Bump sentry-sdk from 2.34.1 to 2.43.0. ([\#19157](https://github.com/element-hq/synapse/issues/19157))
-* Bump sentry-sdk from 2.43.0 to 2.44.0. ([\#19197](https://github.com/element-hq/synapse/issues/19197))
-* Bump tomli from 2.2.1 to 2.3.0. ([\#19194](https://github.com/element-hq/synapse/issues/19194))
-* Bump types-netaddr from 1.3.0.20240530 to 1.3.0.20251108. ([\#19160](https://github.com/element-hq/synapse/issues/19160))
-
-
-
-# Synapse 1.142.1 (2025-11-18)
-
-## Bugfixes
-
-- Fixed a bug introduced in v1.142.0 preventing subpaths in MAS endpoints from working. ([\#19186](https://github.com/element-hq/synapse/issues/19186))
-
-
-
-
-# Synapse 1.142.0 (2025-11-11)
+# Synapse 1.142.0rc4 (2025-11-07)
 
 ## Dropped support for Python 3.9
 
@@ -205,15 +29,6 @@ of these wheels downstream, please reach out to us in
 [#synapse-dev:matrix.org](https://matrix.to/#/#synapse-dev:matrix.org). We'd
 love to hear from you!
 
-## Internal Changes
-
-- Properly stop building wheels for Python 3.9 and free-threaded CPython. ([\#19154](https://github.com/element-hq/synapse/issues/19154))
-
-
-
-
-# Synapse 1.142.0rc4 (2025-11-07)
-
 ## Bugfixes
 
 - Fix a bug introduced in 1.142.0rc1 where any attempt to configure `matrix_authentication_service.secret_path` would prevent the homeserver from starting up. ([\#19144](https://github.com/element-hq/synapse/issues/19144))

Cargo.lock

@@ -73,9 +73,9 @@ checksum = "46c5e41b57b8bba42a04676d81cb89e9ee8e859a1a66f80a5a72e1cb76b34d43"
 
 [[package]]
 name = "bytes"
-version = "1.11.0"
+version = "1.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b35204fbdc0b3f4446b89fc1ac2cf84a8a68971995d0bf2e925ec7cd960f9cb3"
+checksum = "d71b6127be86fdcfddb610f7182ac57211d4b18a3e9c82eb2d17662f2227ad6a"
 
 [[package]]
 name = "cc"
@@ -374,11 +374,12 @@ checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
 [[package]]
 name = "http"
-version = "1.4.0"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3ba2a386d7f85a81f119ad7498ebe444d2e22c2af0b86b069416ace48b3311a"
+checksum = "f4a85d31aea989eead29a3aaf9e1115a180df8282431156e533de47660892565"
 dependencies = [
  "bytes",
+ "fnv",
  "itoa",
 ]
 
@@ -850,9 +851,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-log"
-version = "0.13.2"
+version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f8bae9ad5ba08b0b0ed2bb9c2bdbaeccc69cafca96d78cf0fbcea0d45d122bb"
+checksum = "d359e20231345f21a3b5b6aea7e73f4dc97e1712ef3bfe2d88997ac6a308d784"
 dependencies = [
  "arc-swap",
  "log",

README.rst

@@ -7,48 +7,170 @@
 
 Synapse is an open source `Matrix <https://matrix.org>`__ homeserver
 implementation, written and maintained by `Element <https://element.io>`_.
-`Matrix <https://github.com/matrix-org>`__ is the open standard for secure and
-interoperable real-time communications. You can directly run and manage the
-source code in this repository, available under an AGPL license (or
-alternatively under a commercial license from Element).
+`Matrix <https://github.com/matrix-org>`__ is the open standard for
+secure and interoperable real-time communications. You can directly run
+and manage the source code in this repository, available under an AGPL
+license (or alternatively under a commercial license from Element).
+There is no support provided by Element unless you have a
+subscription from Element.
 
-There is no support provided by Element unless you have a subscription from
-Element.
+Subscription
+============
 
-🚀 Getting started
-==================
+For those that need an enterprise-ready solution, Element
+Server Suite (ESS) is `available via subscription <https://element.io/pricing>`_.
+ESS builds on Synapse to offer a complete Matrix-based backend including the full
+`Admin Console product <https://element.io/enterprise-functionality/admin-console>`_,
+giving admins the power to easily manage an organization-wide
+deployment. It includes advanced identity management, auditing,
+moderation and data retention options as well as Long-Term Support and
+SLAs. ESS supports any Matrix-compatible client.
 
-This component is developed and maintained by `Element <https://element.io>`_.
-It gets shipped as part of the **Element Server Suite (ESS)** which provides the
-official means of deployment.
+.. contents::
 
-ESS is a Matrix distribution from Element with focus on quality and ease of use.
-It ships a full Matrix stack tailored to the respective use case.
+🛠️ Installation and configuration
+==================================
 
-There are three editions of ESS:
+The Synapse documentation describes `how to install Synapse <https://element-hq.github.io/synapse/latest/setup/installation.html>`_. We recommend using
+`Docker images <https://element-hq.github.io/synapse/latest/setup/installation.html#docker-images-and-ansible-playbooks>`_ or `Debian packages from Matrix.org
+<https://element-hq.github.io/synapse/latest/setup/installation.html#matrixorg-packages>`_.
 
-- `ESS Community <https://github.com/element-hq/ess-helm>`_ - the free Matrix
-  distribution from Element tailored to small-/mid-scale, non-commercial
-  community use cases
-- `ESS Pro <https://element.io/server-suite>`_ - the commercial Matrix
-  distribution from Element for professional use
-- `ESS TI-M <https://element.io/server-suite/ti-messenger>`_ - a special version
-  of ESS Pro focused on the requirements of TI-Messenger Pro and ePA as
-  specified by the German National Digital Health Agency Gematik
+.. _federation:
+
+Synapse has a variety of `config options
+<https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html>`_
+which can be used to customise its behaviour after installation.
+There are additional details on how to `configure Synapse for federation here
+<https://element-hq.github.io/synapse/latest/federate.html>`_.
+
+.. _reverse-proxy:
+
+Using a reverse proxy with Synapse
+----------------------------------
+
+It is recommended to put a reverse proxy such as
+`nginx <https://nginx.org/en/docs/http/ngx_http_proxy_module.html>`_,
+`Apache <https://httpd.apache.org/docs/current/mod/mod_proxy_http.html>`_,
+`Caddy <https://caddyserver.com/docs/quick-starts/reverse-proxy>`_,
+`HAProxy <https://www.haproxy.org/>`_ or
+`relayd <https://man.openbsd.org/relayd.8>`_ in front of Synapse. One advantage of
+doing so is that it means that you can expose the default https port (443) to
+Matrix clients without needing to run Synapse with root privileges.
+For information on configuring one, see `the reverse proxy docs
+<https://element-hq.github.io/synapse/latest/reverse_proxy.html>`_.
+
+Upgrading an existing Synapse
+-----------------------------
+
+The instructions for upgrading Synapse are in `the upgrade notes`_.
+Please check these instructions as upgrading may require extra steps for some
+versions of Synapse.
+
+.. _the upgrade notes: https://element-hq.github.io/synapse/develop/upgrade.html
 
 
-🛠️ Standalone installation and configuration
-============================================
+Platform dependencies
+---------------------
 
-The Synapse documentation describes `options for installing Synapse standalone
-<https://element-hq.github.io/synapse/latest/setup/installation.html>`_. See
-below for more useful documentation links.
+Synapse uses a number of platform dependencies such as Python and PostgreSQL,
+and aims to follow supported upstream versions. See the
+`deprecation policy <https://element-hq.github.io/synapse/latest/deprecation_policy.html>`_
+for more details.
 
-- `Synapse configuration options <https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html>`_
-- `Synapse configuration for federation <https://element-hq.github.io/synapse/latest/federate.html>`_
-- `Using a reverse proxy with Synapse <https://element-hq.github.io/synapse/latest/reverse_proxy.html>`_
-- `Upgrading Synapse <https://element-hq.github.io/synapse/develop/upgrade.html>`_
 
+Security note
+-------------
+
+Matrix serves raw, user-supplied data in some APIs -- specifically the `content
+repository endpoints`_.
+
+.. _content repository endpoints: https://matrix.org/docs/spec/client_server/latest.html#get-matrix-media-r0-download-servername-mediaid
+
+Whilst we make a reasonable effort to mitigate against XSS attacks (for
+instance, by using `CSP`_), a Matrix homeserver should not be hosted on a
+domain hosting other web applications. This especially applies to sharing
+the domain with Matrix web clients and other sensitive applications like
+webmail. See
+https://developer.github.com/changes/2014-04-25-user-content-security for more
+information.
+
+.. _CSP: https://github.com/matrix-org/synapse/pull/1021
+
+Ideally, the homeserver should not simply be on a different subdomain, but on
+a completely different `registered domain`_ (also known as top-level site or
+eTLD+1). This is because `some attacks`_ are still possible as long as the two
+applications share the same registered domain.
+
+.. _registered domain: https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-03#section-2.3
+
+.. _some attacks: https://en.wikipedia.org/wiki/Session_fixation#Attacks_using_cross-subdomain_cookie
+
+To illustrate this with an example, if your Element Web or other sensitive web
+application is hosted on ``A.example1.com``, you should ideally host Synapse on
+``example2.com``. Some amount of protection is offered by hosting on
+``B.example1.com`` instead, so this is also acceptable in some scenarios.
+However, you should *not* host your Synapse on ``A.example1.com``.
+
+Note that all of the above refers exclusively to the domain used in Synapse's
+``public_baseurl`` setting. In particular, it has no bearing on the domain
+mentioned in MXIDs hosted on that server.
+
+Following this advice ensures that even if an XSS is found in Synapse, the
+impact to other applications will be minimal.
+
+
+🧪 Testing a new installation
+=============================
+
+The easiest way to try out your new Synapse installation is by connecting to it
+from a web client.
+
+Unless you are running a test instance of Synapse on your local machine, in
+general, you will need to enable TLS support before you can successfully
+connect from a client: see
+`TLS certificates <https://element-hq.github.io/synapse/latest/setup/installation.html#tls-certificates>`_.
+
+An easy way to get started is to login or register via Element at
+https://app.element.io/#/login or https://app.element.io/#/register respectively.
+You will need to change the server you are logging into from ``matrix.org``
+and instead specify a homeserver URL of ``https://<server_name>:8448``
+(or just ``https://<server_name>`` if you are using a reverse proxy).
+If you prefer to use another client, refer to our
+`client breakdown <https://matrix.org/ecosystem/clients/>`_.
+
+If all goes well you should at least be able to log in, create a room, and
+start sending messages.
+
+.. _`client-user-reg`:
+
+Registering a new user from a client
+------------------------------------
+
+By default, registration of new users via Matrix clients is disabled. To enable
+it:
+
+1. In the
+   `registration config section <https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#registration>`_
+   set ``enable_registration: true`` in ``homeserver.yaml``.
+2. Then **either**:
+
+   a. set up a `CAPTCHA <https://element-hq.github.io/synapse/latest/CAPTCHA_SETUP.html>`_, or
+   b. set ``enable_registration_without_verification: true`` in ``homeserver.yaml``.
+
+We **strongly** recommend using a CAPTCHA, particularly if your homeserver is exposed to
+the public internet. Without it, anyone can freely register accounts on your homeserver.
+This can be exploited by attackers to create spambots targeting the rest of the Matrix
+federation.
+
+Your new Matrix ID will be formed partly from the ``server_name``, and partly
+from a localpart you specify when you create the account in the form of::
+
+    @localpart:my.domain.name
+
+(pronounced "at localpart on my dot domain dot name").
+
+As when logging in, you will need to specify a "Custom server".  Specify your
+desired ``localpart`` in the 'Username' box.
 
 🎯 Troubleshooting and support
 ==============================
@@ -60,7 +182,7 @@ Enterprise quality support for Synapse including SLAs is available as part of an
 `Element Server Suite (ESS) <https://element.io/pricing>`_ subscription.
 
 If you are an existing ESS subscriber then you can raise a `support request <https://ems.element.io/support>`_
-and access the `Element product documentation <https://docs.element.io>`_.
+and access the `knowledge base <https://ems-docs.element.io>`_.
 
 🤝 Community support
 --------------------
@@ -79,6 +201,35 @@ issues for support requests, only for bug reports and feature requests.
 .. |docs| replace:: ``docs``
 .. _docs: docs
 
+🪪 Identity Servers
+===================
+
+Identity servers have the job of mapping email addresses and other 3rd Party
+IDs (3PIDs) to Matrix user IDs, as well as verifying the ownership of 3PIDs
+before creating that mapping.
+
+**Identity servers do not store accounts or credentials - these are stored and managed on homeservers.
+Identity Servers are just for mapping 3rd Party IDs to Matrix IDs.**
+
+This process is highly security-sensitive, as there is an obvious risk of spam if it
+is too easy to sign up for Matrix accounts or harvest 3PID data. In the longer
+term, we hope to create a decentralised system to manage it (`matrix-doc #712
+<https://github.com/matrix-org/matrix-doc/issues/712>`_), but in the meantime,
+the role of managing trusted identity in the Matrix ecosystem is farmed out to
+a cluster of known trusted ecosystem partners, who run 'Matrix Identity
+Servers' such as `Sydent <https://github.com/matrix-org/sydent>`_, whose role
+is purely to authenticate and track 3PID logins and publish end-user public
+keys.
+
+You can host your own copy of Sydent, but this will prevent you reaching other
+users in the Matrix ecosystem via their email address, and prevent them finding
+you. We therefore recommend that you use one of the centralised identity servers
+at ``https://matrix.org`` or ``https://vector.im`` for now.
+
+To reiterate: the Identity server will only be used if you choose to associate
+an email address with your account, or send an invite to another user via their
+email address.
+
 
 🛠️ Development
 ==============
@@ -101,29 +252,20 @@ Alongside all that, join our developer community on Matrix:
 Copyright and Licensing
 =======================
 
-  | Copyright 2014–2017 OpenMarket Ltd
-  | Copyright 2017 Vector Creations Ltd
-  | Copyright 2017–2025 New Vector Ltd
-  | Copyright 2025 Element Creations Ltd
+| Copyright 2014-2017 OpenMarket Ltd
+| Copyright 2017 Vector Creations Ltd
+| Copyright 2017-2025 New Vector Ltd
+|
 
-This software is dual-licensed by Element Creations Ltd (Element). It can be
-used either:
+This software is dual-licensed by New Vector Ltd (Element). It can be used either:
 
-(1) for free under the terms of the GNU Affero General Public License (as
-    published by the Free Software Foundation, either version 3 of the License,
-    or (at your option) any later version); OR
+(1) for free under the terms of the GNU Affero General Public License (as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version); OR
 
-(2) under the terms of a paid-for Element Commercial License agreement between
-    you and Element (the terms of which may vary depending on what you and
-    Element have agreed to).
+(2) under the terms of a paid-for Element Commercial License agreement between you and Element (the terms of which may vary depending on what you and Element have agreed to).
 
-Unless required by applicable law or agreed to in writing, software distributed
-under the Licenses is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
-CONDITIONS OF ANY KIND, either express or implied. See the Licenses for the
-specific language governing permissions and limitations under the Licenses.
+Unless required by applicable law or agreed to in writing, software distributed under the Licenses is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the Licenses for the specific language governing permissions and limitations under the Licenses.
 
-Please contact `licensing@element.io <mailto:licensing@element.io>`_ to purchase
-an Element commercial license for this software.
+Please contact `licensing@element.io <mailto:licensing@element.io>`_ to purchase an Element commercial license for this software.
 
 
 .. |support| image:: https://img.shields.io/badge/matrix-community%20support-success

changelog.d/18402.misc

@@ -1 +0,0 @@
-Group together dependabot update PRs to reduce the review load.

changelog.d/19005.feature

@@ -0,0 +1 @@
+Add experimental support for MSC4360: Sliding Sync Threads Extension.

changelog.d/19111.misc

@@ -0,0 +1 @@
+Write union types as `X | Y` where possible, as per PEP 604, added in Python 3.10.

changelog.d/19138.misc

@@ -0,0 +1 @@
+Minor speed up of processing of inbound replication.

changelog.d/19145.misc

@@ -0,0 +1 @@
+Minor speed up of processing of inbound replication.

changelog.d/19146.misc

@@ -0,0 +1 @@
+Minor speed up of processing of inbound replication.

changelog.d/19187.misc

@@ -1 +0,0 @@
-Fix `HomeServer.shutdown()` failing if the homeserver hasn't been setup yet.

changelog.d/19206.bugfix

@@ -1 +0,0 @@
-Fix sliding sync performance slow down for long lived connections.

changelog.d/19212.misc

@@ -1 +0,0 @@
-Respond with useful error codes with `Content-Length` header/s are invalid.

changelog.d/19231.bugfix

@@ -1 +0,0 @@
-Fix a bug where Mastodon posts (and possibly other embeds) have the wrong description for URL previews.

changelog.d/19232.misc

@@ -1 +0,0 @@
-Fix `HomeServer.shutdown()` failing if the homeserver failed to `start`.

changelog.d/19234.misc

@@ -1 +0,0 @@
-Switch the build backend from `poetry-core` to `maturin`.

changelog.d/19253.misc

@@ -1 +0,0 @@
-Raise the limit for concurrently-open non-security @dependabot PRs from 5 to 10.

changelog.d/19254.removal

@@ -1 +0,0 @@
-Remove the "Updates to locked dependencies" section from the changelog due to lack of use and the maintenance burden.

changelog.d/19258.misc

@@ -1 +0,0 @@
-Require 14 days to pass before pulling in general dependency updates to help mitigate upstream supply chain attacks.

changelog.d/19260.feature

@@ -1 +0,0 @@
-Add `memberships` endpoint to the admin API. This is useful for forensics and T&S purpose.

changelog.d/19262.misc

@@ -1 +0,0 @@
-Drop the broken netlify documentation workflow until a new one is implemented.

changelog.d/19267.bugfix

@@ -1 +0,0 @@
-Fix bug where `Duration` was logged incorrectly.

changelog.d/19268.feature

@@ -1 +0,0 @@
-Add an admin API for retrieving a paginated list of quarantined media.

changelog.d/19270.doc

@@ -1 +0,0 @@
-Document the importance of `public_baseurl` when configuring OpenID Connect authentication.

changelog.d/19274.bugfix

@@ -1 +0,0 @@
-Fix bug introduced in 1.143.0 that broke support for versions of `zope-interface` older than 6.2.

changelog.d/19275.feature

@@ -1 +0,0 @@
-Server admins can bypass the quarantine media check when downloading media by setting the `admin_unsafely_bypass_quarantine` query parameter to `true` on Client-Server API media download requests.

changelog.d/19278.misc

@@ -1 +0,0 @@
-Don't include debug logs in `Clock` unless explicitly enabled.

changelog.d/19279.feature

@@ -1 +0,0 @@
-Implemented pagination for the [MSC2666](https://github.com/matrix-org/matrix-spec-proposals/pull/2666) mutual rooms endpoint. Contributed by @tulir @ Beeper.

changelog.d/19281.feature

@@ -1 +0,0 @@
-Admin API: add worker support to `GET /_synapse/admin/v2/users/<user_id>`.

changelog.d/19289.misc

@@ -1 +0,0 @@
-Use `uv` to test olddeps to ensure all transitive dependencies use minimum versions.

changelog.d/19300.feature

@@ -1 +0,0 @@
-Improve proxy support for the `federation_client.py` dev script. Contributed by Denis Kasak (@dkasak).

changelog.d/19302.misc

@@ -1 +0,0 @@
-Unpin the version of Rust we use to build Synapse wheels (was 1.82.0) now that MacOS support has been dropped.

changelog.d/19314.feature

@@ -1 +0,0 @@
-Add experimental support for the [MSC4370](https://github.com/matrix-org/matrix-spec-proposals/pull/4370) Federation API `GET /extremities` endpoint.

contrib/grafana/synapse.json

@@ -2166,10 +2166,10 @@
               "datasource": {
                 "uid": "${DS_PROMETHEUS}"
               },
-              "expr": "rate(synapse_storage_events_persisted_events_sep_total{instance=\"$instance\",job=~\"$job\",index=~\"$index\"}[$bucket_size])",
+              "expr": "rate(synapse_storage_events_persisted_by_source_type{instance=\"$instance\",job=~\"$job\",index=~\"$index\"}[$bucket_size])",
               "format": "time_series",
               "intervalFactor": 2,
-              "legendFormat": "{{origin_type}}",
+              "legendFormat": "{{type}}",
               "refId": "D"
             }
           ],
@@ -2254,7 +2254,7 @@
               "datasource": {
                 "uid": "${DS_PROMETHEUS}"
               },
-              "expr": "sum by(type) (rate(synapse_storage_events_persisted_events_sep_total{job=~\"$job\",index=~\"$index\",instance=\"$instance\"}[$bucket_size]))",
+              "expr": "rate(synapse_storage_events_persisted_by_event_type{job=~\"$job\",index=~\"$index\",instance=\"$instance\"}[$bucket_size])",
               "format": "time_series",
               "instant": false,
               "intervalFactor": 2,
@@ -2294,6 +2294,99 @@
             "align": false
           }
         },
+        {
+          "aliasColors": {
+            "irc-freenode (local)": "#EAB839"
+          },
+          "bars": false,
+          "dashLength": 10,
+          "dashes": false,
+          "datasource": {
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "decimals": 1,
+          "fill": 1,
+          "fillGradient": 0,
+          "gridPos": {
+            "h": 7,
+            "w": 12,
+            "x": 0,
+            "y": 44
+          },
+          "hiddenSeries": false,
+          "id": 44,
+          "legend": {
+            "alignAsTable": true,
+            "avg": false,
+            "current": false,
+            "hideEmpty": true,
+            "hideZero": true,
+            "max": false,
+            "min": false,
+            "show": true,
+            "total": false,
+            "values": false
+          },
+          "lines": true,
+          "linewidth": 1,
+          "links": [],
+          "nullPointMode": "null",
+          "options": {
+            "alertThreshold": true
+          },
+          "percentage": false,
+          "pluginVersion": "9.2.2",
+          "pointradius": 5,
+          "points": false,
+          "renderer": "flot",
+          "seriesOverrides": [],
+          "spaceLength": 10,
+          "stack": false,
+          "steppedLine": false,
+          "targets": [
+            {
+              "datasource": {
+                "uid": "${DS_PROMETHEUS}"
+              },
+              "expr": "rate(synapse_storage_events_persisted_by_origin{job=~\"$job\",index=~\"$index\",instance=\"$instance\"}[$bucket_size])",
+              "format": "time_series",
+              "intervalFactor": 2,
+              "legendFormat": "{{origin_entity}} ({{origin_type}})",
+              "refId": "A",
+              "step": 20
+            }
+          ],
+          "thresholds": [],
+          "timeRegions": [],
+          "title": "Events/s by Origin",
+          "tooltip": {
+            "shared": false,
+            "sort": 2,
+            "value_type": "individual"
+          },
+          "type": "graph",
+          "xaxis": {
+            "mode": "time",
+            "show": true,
+            "values": []
+          },
+          "yaxes": [
+            {
+              "format": "hertz",
+              "logBase": 1,
+              "min": "0",
+              "show": true
+            },
+            {
+              "format": "short",
+              "logBase": 1,
+              "show": true
+            }
+          ],
+          "yaxis": {
+            "align": false
+          }
+        },
         {
           "aliasColors": {},
           "bars": false,

contrib/prometheus/synapse-v2.rules

@@ -44,3 +44,31 @@ groups:
   ###
   ### End of 'Prometheus Console Only' rules block
   ###
+
+
+  ###
+  ### Grafana Only
+  ### The following rules are only needed if you use the Grafana dashboard
+  ### in contrib/grafana/synapse.json
+  ###
+  - record: synapse_storage_events_persisted_by_source_type
+    expr: sum without(type, origin_type, origin_entity) (synapse_storage_events_persisted_events_sep_total{origin_type="remote"})
+    labels:
+      type: remote
+  - record: synapse_storage_events_persisted_by_source_type
+    expr: sum without(type, origin_type, origin_entity) (synapse_storage_events_persisted_events_sep_total{origin_entity="*client*",origin_type="local"})
+    labels:
+      type: local
+  - record: synapse_storage_events_persisted_by_source_type
+    expr: sum without(type, origin_type, origin_entity) (synapse_storage_events_persisted_events_sep_total{origin_entity!="*client*",origin_type="local"})
+    labels:
+      type: bridges
+
+  - record: synapse_storage_events_persisted_by_event_type
+    expr: sum without(origin_entity, origin_type) (synapse_storage_events_persisted_events_sep_total)
+
+  - record: synapse_storage_events_persisted_by_origin
+    expr: sum without(type) (synapse_storage_events_persisted_events_sep_total)
+  ###
+  ### End of 'Grafana Only' rules block
+  ###

debian/changelog

@@ -1,45 +1,3 @@
-matrix-synapse-py3 (1.144.0) stable; urgency=medium
-
-  * New Synapse release 1.144.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 09 Dec 2025 08:30:40 -0700
-
-matrix-synapse-py3 (1.144.0~rc1) stable; urgency=medium
-
-  * New Synapse release 1.144.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 02 Dec 2025 09:11:19 -0700
-
-matrix-synapse-py3 (1.143.0) stable; urgency=medium
-
-  * New Synapse release 1.143.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 25 Nov 2025 08:44:56 -0700
-
-matrix-synapse-py3 (1.143.0~rc2) stable; urgency=medium
-
-  * New Synapse release 1.143.0rc2.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 18 Nov 2025 17:36:08 -0700
-
-matrix-synapse-py3 (1.143.0~rc1) stable; urgency=medium
-
-  * New Synapse release 1.143.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 18 Nov 2025 13:08:39 -0700
-
-matrix-synapse-py3 (1.142.1) stable; urgency=medium
-
-  * New Synapse release 1.142.1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 18 Nov 2025 12:25:23 -0700
-
-matrix-synapse-py3 (1.142.0) stable; urgency=medium
-
-  * New Synapse release 1.142.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 11 Nov 2025 09:45:51 +0000
-
 matrix-synapse-py3 (1.142.0~rc4) stable; urgency=medium
 
   * New Synapse release 1.142.0rc4.

docker/complement/Dockerfile

@@ -11,7 +11,7 @@ ARG SYNAPSE_VERSION=latest
 ARG FROM=matrixdotorg/synapse-workers:$SYNAPSE_VERSION
 ARG DEBIAN_VERSION=trixie
 
-FROM docker.io/library/postgres:14-${DEBIAN_VERSION} AS postgres_base
+FROM docker.io/library/postgres:13-${DEBIAN_VERSION} AS postgres_base
 
 FROM $FROM
 # First of all, we copy postgres server from the official postgres image,
@@ -26,7 +26,7 @@ RUN adduser --system --uid 999 postgres --home /var/lib/postgresql
 COPY --from=postgres_base /usr/lib/postgresql /usr/lib/postgresql
 COPY --from=postgres_base /usr/share/postgresql /usr/share/postgresql
 COPY --from=postgres_base --chown=postgres /var/run/postgresql /var/run/postgresql
-ENV PATH="${PATH}:/usr/lib/postgresql/14/bin"
+ENV PATH="${PATH}:/usr/lib/postgresql/13/bin"
 ENV PGDATA=/var/lib/postgresql/data
 
 # We also initialize the database at build time, rather than runtime, so that it's faster to spin up the image.

docker/configure_workers_and_start.py

@@ -196,7 +196,6 @@ WORKERS_CONFIG: dict[str, dict[str, Any]] = {
             "^/_matrix/client/(api/v1|r0|v3|unstable)/keys/upload",
             "^/_matrix/client/(api/v1|r0|v3|unstable)/keys/device_signing/upload$",
             "^/_matrix/client/(api/v1|r0|v3|unstable)/keys/signatures/upload$",
-            "^/_matrix/client/unstable/org.matrix.msc4140/delayed_events(/.*/restart)?$",
         ],
         "shared_extra_conf": {},
         "worker_extra_conf": "",

docs/SUMMARY.md

@@ -5,7 +5,6 @@
 
 # Setup
   - [Installation](setup/installation.md)
-  - [Security](setup/security.md)
   - [Using Postgres](postgres.md)
   - [Configuring a Reverse Proxy](reverse_proxy.md)
   - [Configuring a Forward/Outbound Proxy](setup/forward_proxy.md)

docs/admin_api/media_admin_api.md

@@ -73,33 +73,6 @@ Response:
 }
 ```
 
-## Listing all quarantined media
-
-This API returns a list of all quarantined media on the server. It is paginated, and can be scoped to either local or
-remote media. Note that the pagination values are also scoped to the request parameters - changing them but keeping the
-same pagination values will result in unexpected results.
-
-Request:
-```http
-GET /_synapse/admin/v1/media/quarantined?from=0&limit=100&kind=local
-```
-
-`from` and `limit` are optional parameters, and default to `0` and `100` respectively. They are the row index and number
-of rows to return - they are not timestamps.
-
-`kind` *MUST* either be `local` or `remote`.
-
-The API returns a JSON body containing MXC URIs for the quarantined media, like the following:
-
-```json
-{
-  "media": [
-    "mxc://localhost/xwvutsrqponmlkjihgfedcba",
-    "mxc://localhost/abcdefghijklmnopqrstuvwx"
-  ]
-}
-```
-
 # Quarantine media
 
 Quarantining media means that it is marked as inaccessible by users. It applies
@@ -115,20 +88,6 @@ is quarantined, Synapse will:
  - Quarantine any existing cached remote media.
  - Quarantine any future remote media.
 
-## Downloading quarantined media
-
-Normally, when media is quarantined, it will return a 404 error when downloaded.
-Admins can bypass this by adding `?admin_unsafely_bypass_quarantine=true`
-to the [normal download URL](https://spec.matrix.org/v1.16/client-server-api/#get_matrixclientv1mediadownloadservernamemediaid).
-
-Bypassing the quarantine check is not recommended. Media is typically quarantined
-to prevent harmful content from being served to users, which includes admins. Only
-set the bypass parameter if you intentionally want to access potentially harmful
-content.
-
-Non-admin users cannot bypass quarantine checks, even when specifying the above
-query parameter.
-
 ## Quarantining media by ID
 
 This API quarantines a single piece of local or remote media.

docs/admin_api/user_admin_api.md

@@ -505,55 +505,6 @@ with a body of:
 }
 ```
 
-## List room memberships of a user
-
-Gets a list of room memberships for a specific `user_id`. This
-endpoint differs from
-[`GET /_synapse/admin/v1/users/<user_id>/joined_rooms`](#list-joined-rooms-of-a-user)
-in that it returns rooms with memberships other than "join".
-
-The API is:
-
-```
-GET /_synapse/admin/v1/users/<user_id>/memberships
-```
-
-A response body like the following is returned:
-
-```json
-    {
-        "memberships": {
-            "!DuGcnbhHGaSZQoNQR:matrix.org": "join",
-            "!ZtSaPCawyWtxfWiIy:matrix.org": "leave",
-        }
-    }
-```
-
-which is a list of room membership states for the given user. This endpoint can
-be used with both local and remote users, with the caveat that the homeserver will
-only be aware of the memberships for rooms that one of its local users has joined.
-
-Remote user memberships may also be out of date if all local users have since left
-a room. The homeserver will thus no longer receive membership updates about it.
-
-The list includes rooms that the user has since left; other membership states (knock,
-invite, etc.) are also possible.
-
-Note that rooms will only disappear from this list if they are
-[purged](./rooms.md#delete-room-api) from the homeserver.
-
-**Parameters**
-
-The following parameters should be set in the URL:
-
-- `user_id` - fully qualified: for example, `@user:server.com`.
-
-**Response**
-
-The following fields are returned in the JSON response body:
-
-- `memberships` - A map of `room_id` (string) to `membership` state (string).
-
 ## List joined rooms of a user
 
 Gets a list of all `room_id` that a specific `user_id` is joined to and is a member of (participating in).

docs/development/synapse_architecture/streams.md

@@ -1,4 +1,4 @@
-# Streams
+## Streams
 
 Synapse has a concept of "streams", which are roughly described in [`id_generators.py`](
     https://github.com/element-hq/synapse/blob/develop/synapse/storage/util/id_generators.py
@@ -19,7 +19,7 @@ To that end, let's describe streams formally, paraphrasing from the docstring of
     https://github.com/element-hq/synapse/blob/a719b703d9bd0dade2565ddcad0e2f3a7a9d4c37/synapse/storage/util/id_generators.py#L96
 ).
 
-## Definition
+### Definition
 
 A stream is an append-only log `T1, T2, ..., Tn, ...` of facts[^1] which grows over time.
 Only "writers" can add facts to a stream, and there may be multiple writers.
@@ -47,7 +47,7 @@ But unhappy cases (e.g. transaction rollback due to an error) also count as comp
 Once completed, the rows written with that stream ID are fixed, and no new rows
 will be inserted with that ID.
 
-## Current stream ID
+### Current stream ID
 
 For any given stream reader (including writers themselves), we may define a per-writer current stream ID:
 
@@ -93,7 +93,7 @@ Consider a single-writer stream which is initially at ID 1.
 | Complete 6 | 6                 |                                                 |
 
 
-## Multi-writer streams
+### Multi-writer streams
 
 There are two ways to view a multi-writer stream.
 
@@ -115,7 +115,7 @@ The facts this stream holds are instructions to "you should now invalidate these
 We only ever treat this as a multiple single-writer streams as there is no important ordering between cache invalidations.
 (Invalidations are self-contained facts; and the invalidations commute/are idempotent).
 
-## Writing to streams
+### Writing to streams
 
 Writers need to track:
  - track their current position (i.e. its own per-writer stream ID).
@@ -133,7 +133,7 @@ To complete a fact, first remove it from your map of facts currently awaiting co
 Then, if no earlier fact is awaiting completion, the writer can advance its current position in that stream.
 Upon doing so it should emit an `RDATA` message[^3], once for every fact between the old and the new stream ID.
 
-## Subscribing to streams
+### Subscribing to streams
 
 Readers need to track the current position of every writer.
 
@@ -146,44 +146,10 @@ The `RDATA` itself is not a self-contained representation of the fact;
 readers will have to query the stream tables for the full details.
 Readers must also advance their record of the writer's current position for that stream.
 
-## Summary
+# Summary
 
 In a nutshell: we have an append-only log with a "buffer/scratchpad" at the end where we have to wait for the sequence to be linear and contiguous.
 
----
-
-## Cheatsheet for creating a new stream
-
-These rough notes and links may help you to create a new stream and add all the
-necessary registration and event handling.
-
-**Create your stream:**
-- [create a stream class and stream row class](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/replication/tcp/streams/_base.py#L728)
-  - will need an [ID generator](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/storage/databases/main/thread_subscriptions.py#L75)
-    - may need [writer configuration](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/config/workers.py#L177), if there isn't already an obvious source of configuration for which workers should be designated as writers to your new stream.
-      - if adding new writer configuration, add Docker-worker configuration, which lets us configure the writer worker in Complement tests: [[1]](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/docker/configure_workers_and_start.py#L331), [[2]](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/docker/configure_workers_and_start.py#L440)
-- most of the time, you will likely introduce a new datastore class for the concept represented by the new stream, unless there is already an obvious datastore that covers it.
-- consider whether it may make sense to introduce a handler
-
-**Register your stream in:**
-- [`STREAMS_MAP`](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/replication/tcp/streams/__init__.py#L71)
-
-**Advance your stream in:**
-- [`process_replication_position` of your appropriate datastore](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/storage/databases/main/thread_subscriptions.py#L111)
-  - don't forget the super call
-
-**If you're going to do any caching that needs invalidation from new rows:**
-- add invalidations to [`process_replication_rows` of your appropriate datastore](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/storage/databases/main/thread_subscriptions.py#L91)
-  - don't forget the super call
-- add local-only [invalidations to your writer transactions](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/storage/databases/main/thread_subscriptions.py#L201)
-
-**For streams to be used in sync:**
-- add a new field to [`StreamToken`](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/types/__init__.py#L1003)
-  - add a new [`StreamKeyType`](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/types/__init__.py#L999)
-- add appropriate wake-up rules
-  - in [`on_rdata`](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/replication/tcp/client.py#L260)
-  - locally on the same worker when completing a write, [e.g. in your handler](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/handlers/thread_subscriptions.py#L139)
-- add the stream in [`bound_future_token`](https://github.com/element-hq/synapse/blob/4367fb2d078c52959aeca0fe6874539c53e8360d/synapse/streams/events.py#L127)
 
 ---
 

docs/openid.md

@@ -50,11 +50,6 @@ setting in your configuration file.
 See the [configuration manual](usage/configuration/config_documentation.md#oidc_providers) for some sample settings, as well as
 the text below for example configurations for specific providers.
 
-For setups using [`.well-known` delegation](delegate.md), make sure
-[`public_baseurl`](usage/configuration/config_documentation.md#public_baseurl) is set
-appropriately. If unset, Synapse defaults to `https://<server_name>/` which is used in
-the OIDC callback URL.
-
 ## OIDC Back-Channel Logout
 
 Synapse supports receiving [OpenID Connect Back-Channel Logout](https://openid.net/specs/openid-connect-backchannel-1_0.html) notifications.

docs/reverse_proxy.md

@@ -86,45 +86,6 @@ server {
 }
 ```
 
-### Nginx Proxy Manager or NPMPlus
-
-```nginx
-Add New Proxy-Host
-	- Tab Details
-		- Domain Names: matrix.example.com
-		- Scheme: http
-		- Forward Hostname / IP: localhost # IP address or hostname where Synapse is hosted. Bare-metal or Container.
-		- Forward Port: 8008
-
-	- Tab Custom locations
-		- Add Location
-		- Define Location: /_matrix
-		- Scheme: http
-		- Forward Hostname / IP: localhost # IP address or hostname where Synapse is hosted. Bare-metal or Container.
-		- Forward Port: 8008
-		- Click on the gear icon to display a custom configuration field. Increase client_max_body_size to match max_upload_size defined in homeserver.yaml
-			- Enter this in the Custom Field: client_max_body_size 50M;
-
-	- Tab SSL/TLS
-		- Choose your SSL/TLS certificate and preferred settings.
-
-	- Tab Advanced
-		- Enter this in the Custom Field. This means that port 8448 no longer needs to be opened in your Firewall.
-		  The Federation communication use now Port 443.
-
-			location /.well-known/matrix/server {
-			  return 200 '{"m.server": "matrix.example.com:443"}';
-      		  add_header Content-Type application/json;
-			}
-
- 			location /.well-known/matrix/client {
-      		  return 200 '{"m.homeserver": {"base_url": "https://matrix.example.com"}}';
-      		  add_header Content-Type application/json;
-      		  add_header "Access-Control-Allow-Origin" *;
-			}
-
-```
-
 ### Caddy v2
 
 ```

docs/setup/installation.md

@@ -16,15 +16,8 @@ that your email address is probably `user@example.com` rather than
 `user@email.example.com`) - but doing so may require more advanced setup: see
 [Setting up Federation](../federate.md).
 
-⚠️ Before setting up Synapse please consult the [security page](security.md) for
-best practices. ⚠️
-
 ## Installing Synapse
 
-Note: Synapse uses a number of platform dependencies such as Python and PostgreSQL,
-and aims to follow supported upstream versions. See the [deprecation
-policy](../deprecation_policy.md) for more details.
-
 ### Prebuilt packages
 
 Prebuilt packages are available for a number of platforms. These are recommended

docs/setup/security.md

@@ -1,41 +0,0 @@
-# Security
-
-This page lays out security best-practices when running Synapse.
-
-If you believe you have encountered a security issue, see our [Security
-Disclosure Policy](https://element.io/en/security/security-disclosure-policy).
-
-## Content repository
-
-Matrix serves raw, user-supplied data in some APIs — specifically the [content
-repository endpoints](https://matrix.org/docs/spec/client_server/latest.html#get-matrix-media-r0-download-servername-mediaid).
-
-Whilst we make a reasonable effort to mitigate against XSS attacks (for
-instance, by using [CSP](https://github.com/matrix-org/synapse/pull/1021)), a
-Matrix homeserver should not be hosted on a domain hosting other web
-applications. This especially applies to sharing the domain with Matrix web
-clients and other sensitive applications like webmail. See
-https://developer.github.com/changes/2014-04-25-user-content-security for more
-information.
-
-Ideally, the homeserver should not simply be on a different subdomain, but on a
-completely different [registered
-domain](https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-03#section-2.3)
-(also known as top-level site or eTLD+1). This is because [some
-attacks](https://en.wikipedia.org/wiki/Session_fixation#Attacks_using_cross-subdomain_cookie)
-are still possible as long as the two applications share the same registered
-domain.
-
-
-To illustrate this with an example, if your Element Web or other sensitive web
-application is hosted on `A.example1.com`, you should ideally host Synapse on
-`example2.com`. Some amount of protection is offered by hosting on
-`B.example1.com` instead, so this is also acceptable in some scenarios.
-However, you should *not* host your Synapse on `A.example1.com`.
-
-Note that all of the above refers exclusively to the domain used in Synapse's
-`public_baseurl` setting. In particular, it has no bearing on the domain
-mentioned in MXIDs hosted on that server.
-
-Following this advice ensures that even if an XSS is found in Synapse, the
-impact to other applications will be minimal.

docs/upgrade.md

@@ -117,33 +117,6 @@ each upgrade are complete before moving on to the next upgrade, to avoid
 stacking them up. You can monitor the currently running background updates with
 [the Admin API](usage/administration/admin_api/background_updates.html#status).
 
-# Upgrading to v1.144.0
-
-## Worker support for unstable MSC4140 `/restart` endpoint
-
-The following unstable endpoint pattern may now be routed to worker processes:
-
-```
-^/_matrix/client/unstable/org.matrix.msc4140/delayed_events/.*/restart$
-```
-
-## Unstable mutual rooms endpoint is now behind an experimental feature flag
-
-The unstable mutual rooms endpoint from
-[MSC2666](https://github.com/matrix-org/matrix-spec-proposals/pull/2666)
-(`/_matrix/client/unstable/uk.half-shot.msc2666/user/mutual_rooms`) is now
-disabled by default.  If you rely on this unstable endpoint, you must now set
-`experimental_features.msc2666_enabled: true` in your configuration to keep
-using it.
-
-# Upgrading to v1.143.0
-
-## Dropping support for PostgreSQL 13
-
-In line with our [deprecation policy](deprecation_policy.md), we've dropped
-support for PostgreSQL 13, as it is no longer supported upstream.
-This release of Synapse requires PostgreSQL 14+.
-
 # Upgrading to v1.142.0
 
 ## Python 3.10+ is now required

docs/workers.md

@@ -255,8 +255,6 @@ information.
     ^/_matrix/client/(api/v1|r0|v3|unstable)/directory/room/.*$
     ^/_matrix/client/(r0|v3|unstable)/capabilities$
     ^/_matrix/client/(r0|v3|unstable)/notifications$
-
-    # Admin API requests
     ^/_synapse/admin/v1/rooms/[^/]+$
 
     # Encryption requests
@@ -287,13 +285,10 @@ information.
     # User directory search requests
     ^/_matrix/client/(r0|v3|unstable)/user_directory/search$
 
-    # Unstable MSC4140 support
-    ^/_matrix/client/unstable/org.matrix.msc4140/delayed_events(/.*/restart)?$
-
 Additionally, the following REST endpoints can be handled for GET requests:
 
-    # Push rules requests
     ^/_matrix/client/(api/v1|r0|v3|unstable)/pushrules/
+    ^/_matrix/client/unstable/org.matrix.msc4140/delayed_events
 
     # Account data requests
     ^/_matrix/client/(r0|v3|unstable)/.*/tags
@@ -302,9 +297,6 @@ Additionally, the following REST endpoints can be handled for GET requests:
     # Presence requests
     ^/_matrix/client/(api/v1|r0|v3|unstable)/presence/
 
-    # Admin API requests
-    ^/_synapse/admin/v2/users/[^/]+$
-
 Pagination requests can also be handled, but all requests for a given
 room must be routed to the same instance. Additionally, care must be taken to
 ensure that the purge history admin API is not used while pagination requests

pyproject.toml

@@ -1,311 +1,3 @@
-[project]
-name = "matrix-synapse"
-version = "1.144.0"
-description = "Homeserver for the Matrix decentralised comms protocol"
-readme = "README.rst"
-authors = [
-    { name = "Matrix.org Team and Contributors", email = "packages@matrix.org" }
-]
-requires-python = ">=3.10.0,<4.0.0"
-license = "AGPL-3.0-or-later OR LicenseRef-Element-Commercial"
-classifiers = [
-    "Development Status :: 5 - Production/Stable",
-    "Topic :: Communications :: Chat",
-]
-
-# Mandatory Dependencies
-dependencies = [
-    # we use the TYPE_CHECKER.redefine method added in jsonschema 3.0.0
-    "jsonschema>=3.0.0",
-    # 0.25.0 is the first version to support Python 3.14.
-    # We can remove this once https://github.com/python-jsonschema/jsonschema/issues/1426 is fixed
-    # and included in a release.
-    "rpds-py>=0.25.0",
-    # We choose 2.0 as a lower bound: the most recent backwards incompatible release.
-    # It seems generally available, judging by https://pkgs.org/search/?q=immutabledict
-    "immutabledict>=2.0",
-    # We require 2.1.0 or higher for type hints. Previous guard was >= 1.1.0
-    "unpaddedbase64>=2.1.0",
-    # We require 2.0.0 for immutabledict support.
-    "canonicaljson>=2.0.0,<3.0.0",
-    # we use the type definitions added in signedjson 1.1.
-    "signedjson>=1.1.0,<2.0.0",
-    # validating SSL certs for IP addresses requires service_identity 18.1.
-    "service-identity>=18.1.0",
-    # Twisted 18.9 introduces some logger improvements that the structured
-    # logger utilises
-    # Twisted 19.7.0 moves test helpers to a new module and deprecates the old location.
-    # Twisted 21.2.0 introduces contextvar support.
-    # We could likely bump this to 22.1 without making distro packagers'
-    # lives hard (as of 2025-07, distro support is Ubuntu LTS: 22.1, Debian stable: 22.4,
-    # RHEL 9: 22.10)
-    "Twisted[tls]>=21.2.0",
-    "treq>=21.5.0",
-    # Twisted has required pyopenssl 16.0 since about Twisted 16.6.
-    # pyOpenSSL 16.2.0 fixes compatibility with OpenSSL 1.1.0. 
-    "pyOpenSSL>=16.2.0",
-    "PyYAML>=5.3",
-    "pyasn1>=0.1.9",
-    "pyasn1-modules>=0.0.7",
-    "bcrypt>=3.1.7",
-    # 10.0.1 minimum is mandatory here because of libwebp CVE-2023-4863.
-    # Packagers that already took care of libwebp can lower that down to 5.4.0.
-    "Pillow>=10.0.1",
-    # We use SortedDict.peekitem(), which was added in sortedcontainers 1.5.2.
-    # 2.0.5 updates collections.abc imports to avoid Python 3.10 incompatibility.
-    "sortedcontainers>=2.0.5",
-    "pymacaroons>=0.13.0",
-    "msgpack>=0.5.2",
-    "phonenumbers>=8.2.0",
-    # we use GaugeHistogramMetric, which was added in prom-client 0.4.0.
-    # `prometheus_client.metrics` was added in 0.5.0, so we require that too.
-    # We chose 0.6.0 as that is the current version in Debian Buster (oldstable).
-    "prometheus-client>=0.6.0",
-    # we use `order`, which arrived in attrs 19.2.0.
-    # Note: 21.1.0 broke `/sync`, see https://github.com/matrix-org/synapse/issues/9936
-    "attrs>=19.2.0,!=21.1.0",
-    "netaddr>=0.7.18",
-    # Jinja 2.x is incompatible with MarkupSafe>=2.1. To ensure that admins do not
-    # end up with a broken installation, with recent MarkupSafe but old Jinja, we
-    # add a lower bound to the Jinja2 dependency.
-    "Jinja2>=3.0",
-    # 3.2.0 updates collections.abc imports to avoid Python 3.10 incompatibility.
-    "bleach>=3.2.0",
-    # pydantic 2.12 depends on typing-extensions>=4.14.1
-    "typing-extensions>=4.14.1",
-    # We enforce that we have a `cryptography` version that bundles an `openssl`
-    # with the latest security patches.
-    "cryptography>=3.4.7",
-    # ijson 3.1.4 fixes a bug with "." in property names
-    "ijson>=3.1.4",
-    "matrix-common>=1.3.0,<2.0.0",
-    # We need packaging.verison.Version(...).major added in 20.0.
-    "packaging>=20.0",
-    "pydantic>=2.8;python_version < '3.14'",
-    "pydantic>=2.12;python_version >= '3.14'",
-
-    # This is for building the rust components during "poetry install", which
-    # currently ignores the `build-system.requires` directive (c.f.
-    # https://github.com/python-poetry/poetry/issues/6154). Both `pip install` and
-    # `poetry build` do the right thing without this explicit dependency.
-    #
-    # This isn't really a dev-dependency, as `poetry install --without dev` will fail,
-    # but the alternative is to add it to the main list of deps where it isn't
-    # needed.
-    "setuptools_rust>=1.3",
-
-    # This is used for parsing multipart responses
-    "python-multipart>=0.0.9",
-
-    # Transitive dependency constraints
-    # These dependencies aren't directly required by Synapse.
-    # However, in order for Synapse to build, Synapse requires a higher minimum version
-    # for these dependencies than the minimum specified by the direct dependency.
-    # We should periodically check to see if these dependencies are still necessary and
-    # remove any that are no longer required.
-    "cffi>=1.15", # via cryptography
-    "pynacl>=1.3", # via signedjson
-    "pyparsing>=2.4",  # via packaging
-    "pyrsistent>=0.18.0",  # via jsonschema
-    "requests>=2.16.0", # 2.16.0+ no longer vendors urllib3, avoiding Python 3.10+ incompatibility
-    "urllib3>=1.26.5", # via treq; 1.26.5 fixes Python 3.10+ collections.abc compatibility
-    # 5.2 is the current version in Debian oldstable. If we don't care to support that, then 5.4 is
-    # the minimum version from Ubuntu 22.04 and RHEL 9. (as of 2025-12)
-    # When bumping this version to 6.2 or above, refer to https://github.com/element-hq/synapse/pull/19274
-    # for details of Synapse improvements that may be unlocked. Particularly around the use of `|`
-    # syntax with zope interface types.
-    "zope-interface>=5.2", # via twisted
-]
-
-[project.optional-dependencies]
-matrix-synapse-ldap3 = ["matrix-synapse-ldap3>=0.1"]
-postgres = [
-    "psycopg2>=2.8;platform_python_implementation != 'PyPy'",
-    "psycopg2cffi>=2.8;platform_python_implementation == 'PyPy'",
-    "psycopg2cffi-compat==1.1;platform_python_implementation == 'PyPy'",
-]
-saml2 = [
-    "pysaml2>=4.5.0",
-
-    # Transitive dependencies from pysaml2
-    # These dependencies aren't directly required by Synapse.
-    # However, in order for Synapse to build, Synapse requires a higher minimum version
-    # for these dependencies than the minimum specified by the direct dependency.
-    "defusedxml>=0.7.1", # via pysaml2
-    "pytz>=2018.3",  # via pysaml2
-]
-oidc = ["authlib>=0.15.1"]
-# systemd-python is necessary for logging to the systemd journal via
-# `systemd.journal.JournalHandler`, as is documented in
-# `contrib/systemd/log_config.yaml`.
-systemd = ["systemd-python>=231"]
-url-preview = ["lxml>=4.6.3"]
-sentry = ["sentry-sdk>=0.7.2"]
-opentracing = [
-    "jaeger-client>=4.2.0",
-    "opentracing>=2.2.0",
-
-    # Transitive dependencies from jaeger-client
-    # These dependencies aren't directly required by Synapse.
-    # However, in order for Synapse to build, Synapse requires a higher minimum version
-    # for these dependencies than the minimum specified by the direct dependency.
-    "thrift>=0.10",  # via jaeger-client
-    "tornado>=6.0",  # via jaeger-client
-]
-jwt = ["authlib"]
-# hiredis is not a *strict* dependency, but it makes things much faster.
-# (if it is not installed, we fall back to slow code.)
-redis = ["txredisapi>=1.4.7", "hiredis>=0.3"]
-# Required to use experimental `caches.track_memory_usage` config option.
-cache-memory = ["pympler>=1.0"]
-# If this is updated, don't forget to update the equivalent lines in
-# `dependency-groups.dev` below.
-test = ["parameterized>=0.9.0", "idna>=3.3"]
-
-# The duplication here is awful.
-#
-# TODO: This can be resolved via PEP 735 dependency groups, which poetry supports
-# since 2.2.0. However, switching to that would require updating the command
-# developers use to install the `all` group. This would require some coordination.
-#
-# NB: the strings in this list must be *package* names, not extra names.
-# Some of our extra names _are_ package names, which can lead to great confusion.
-all = [
-    # matrix-synapse-ldap3
-    "matrix-synapse-ldap3>=0.1",
-    # postgres
-    "psycopg2>=2.8;platform_python_implementation != 'PyPy'",
-    "psycopg2cffi>=2.8;platform_python_implementation == 'PyPy'",
-    "psycopg2cffi-compat==1.1;platform_python_implementation == 'PyPy'",
-    # saml2
-    "pysaml2>=4.5.0",
-    # oidc and jwt
-    "authlib>=0.15.1",
-    # url-preview
-    "lxml>=4.6.3",
-    # sentry
-    "sentry-sdk>=0.7.2",
-    # opentracing
-    "jaeger-client>=4.2.0", "opentracing>=2.2.0",
-    # redis
-    "txredisapi>=1.4.7", "hiredis>=0.3",
-    # cache-memory
-    # 1.0 added support for python 3.10, our current minimum supported python version
-    "pympler>=1.0",
-    # omitted:
-    #   - test: it's useful to have this separate from dev deps in the olddeps job
-    #   - systemd: this is a system-based requirement
-
-    # Transitive dependencies
-    # These dependencies aren't directly required by Synapse.
-    # However, in order for Synapse to build, Synapse requires a higher minimum version
-    # for these dependencies than the minimum specified by the direct dependency.
-    "defusedxml>=0.7.1", # via pysaml2
-    "pytz>=2018.3",  # via pysaml2
-    "thrift>=0.10",  # via jaeger-client
-    "tornado>=6.0",  # via jaeger-client
-]
-
-[project.urls]
-repository = "https://github.com/element-hq/synapse"
-documentation = "https://element-hq.github.io/synapse/latest"
-"Issue Tracker" = "https://github.com/element-hq/synapse/issues"
-
-[project.scripts]
-synapse_homeserver = "synapse.app.homeserver:main"
-synapse_worker = "synapse.app.generic_worker:main"
-synctl = "synapse._scripts.synctl:main"
-
-export_signing_key = "synapse._scripts.export_signing_key:main"
-generate_config = "synapse._scripts.generate_config:main"
-generate_log_config = "synapse._scripts.generate_log_config:main"
-generate_signing_key = "synapse._scripts.generate_signing_key:main"
-hash_password = "synapse._scripts.hash_password:main"
-register_new_matrix_user = "synapse._scripts.register_new_matrix_user:main"
-synapse_port_db = "synapse._scripts.synapse_port_db:main"
-synapse_review_recent_signups = "synapse._scripts.review_recent_signups:main"
-update_synapse_database = "synapse._scripts.update_synapse_database:main"
-
-[tool.poetry]
-packages = [{ include = "synapse" }]
-
-[tool.poetry.build]
-# Compile our rust module when using `poetry install`. This is still required
-# while using `poetry` as the build frontend. Saves the developer from needing
-# to run both:
-#
-# $ poetry install
-# $ maturin develop
-script = "build_rust.py"
-# Create a `setup.py` file which will call the `build` method in our build
-# script.
-#
-# Our build script currently uses the "old" build method, where we define a
-# `build` method and `setup.py` calls it. Poetry developers have mentioned that
-# this will eventually be removed:
-# https://github.com/matrix-org/synapse/pull/14949#issuecomment-1418001859
-#
-# The new build method is defined here:
-# https://python-poetry.org/docs/building-extension-modules/#maturin-build-script
-# but is still marked as "unstable" at the time of writing. This would also
-# bump our minimum `poetry-core` version to 1.5.0.
-#
-# We can just drop this work-around entirely if migrating away from
-# Poetry, thus there's little motivation to update the build script.
-generate-setup-file = true
-
-# Dependencies used for developing Synapse itself.
-#
-# Hold off on migrating these to `dev-dependencies` (PEP 735) for now until
-# Poetry 2.2.0+, pip 25.1+ are more widely available.
-[tool.poetry.group.dev.dependencies]
-# We pin development dependencies in poetry.lock so that our tests don't start
-# failing on new releases. Keeping lower bounds loose here means that dependabot
-# can bump versions without having to update the content-hash in the lockfile.
-# This helps prevents merge conflicts when running a batch of dependabot updates.
-ruff = "0.14.6"
-
-# Typechecking
-lxml-stubs = ">=0.4.0"
-mypy = "*"
-mypy-zope = "*"
-types-bleach = ">=4.1.0"
-types-jsonschema = ">=3.2.0"
-types-netaddr = ">=0.8.0.6"
-types-opentracing = ">=2.4.2"
-types-Pillow = ">=8.3.4"
-types-psycopg2 = ">=2.9.9"
-types-pyOpenSSL = ">=20.0.7"
-types-PyYAML = ">=5.4.10"
-types-requests = ">=2.26.0"
-types-setuptools = ">=57.4.0"
-
-# Dependencies which are exclusively required by unit test code. This is
-# NOT a list of all modules that are necessary to run the unit tests.
-# Tests assume that all optional dependencies are installed.
-#
-# If this is updated, don't forget to update the equivalent lines in
-# project.optional-dependencies.test.
-parameterized = ">=0.9.0"
-idna = ">=3.3"
-
-# The following are used by the release script
-click = ">=8.1.3"
-# GitPython was == 3.1.14; bumped to 3.1.20, the first release with type hints.
-GitPython = ">=3.1.20"
-markdown-it-py = ">=3.0.0"
-pygithub = ">=1.59"
-# The following are executed as commands by the release script.
-twine = "*"
-# Towncrier min version comes from https://github.com/matrix-org/synapse/pull/3425. Rationale unclear.
-towncrier = ">=18.6.0rc1"
-
-# Used for checking the Poetry lockfile
-tomli = ">=1.2.3"
-
-# Used for checking the schema delta files
-sqlglot = ">=28.0.0"
-
 [tool.towncrier]
     package = "synapse"
     filename = "CHANGES.md"
@@ -388,12 +80,15 @@ select = [
     "G",
     # pyupgrade
     "UP006",
+    "UP007",
+    "UP045",
 ]
 extend-safe-fixes = [
     # pyupgrade rules compatible with Python >= 3.9
     "UP006",
-    # Allow ruff to automatically fix trailing spaces within a multi-line string/comment.
-    "W293"
+    "UP007",
+    # pyupgrade rules compatible with Python >= 3.10
+    "UP045",
 ]
 
 [tool.ruff.lint.isort]
@@ -414,29 +109,280 @@ line-ending = "auto"
 [tool.maturin]
 manifest-path = "rust/Cargo.toml"
 module-name = "synapse.synapse_rust"
-python-source = "."
-sdist-include = [
-    "AUTHORS.rst",
-    "book.toml",
-    "changelog.d",
-    "CHANGES.md",
-    "CONTRIBUTING.md",
-    "demo",
-    "docs",
-    "INSTALL.md",
-    "mypy.ini",
-    "scripts-dev",
-    "synmark",
-    "sytest-blacklist",
-    "tests",
-    "UPGRADE.rst",
-    "Cargo.toml",
-    "Cargo.lock",
-    "rust/Cargo.toml",
-    "rust/build.rs",
-    "rust/src/**",
+
+[tool.poetry]
+name = "matrix-synapse"
+version = "1.142.0rc4"
+description = "Homeserver for the Matrix decentralised comms protocol"
+authors = ["Matrix.org Team and Contributors <packages@matrix.org>"]
+license = "AGPL-3.0-or-later OR LicenseRef-Element-Commercial"
+readme = "README.rst"
+repository = "https://github.com/element-hq/synapse"
+packages = [
+    { include = "synapse" },
 ]
-sdist-exclude = ["synapse/*.so"]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Topic :: Communications :: Chat",
+]
+include = [
+    { path = "AUTHORS.rst", format = "sdist" },
+    { path = "book.toml", format = "sdist" },
+    { path = "changelog.d", format = "sdist" },
+    { path = "CHANGES.md", format = "sdist" },
+    { path = "CONTRIBUTING.md", format = "sdist" },
+    { path = "demo", format = "sdist" },
+    { path = "docs", format = "sdist" },
+    { path = "INSTALL.md", format = "sdist" },
+    { path = "mypy.ini", format = "sdist" },
+    { path = "scripts-dev", format = "sdist" },
+    { path = "synmark", format="sdist" },
+    { path = "sytest-blacklist", format = "sdist" },
+    { path = "tests", format = "sdist" },
+    { path = "UPGRADE.rst", format = "sdist" },
+    { path = "Cargo.toml", format = "sdist" },
+    { path = "Cargo.lock", format = "sdist" },
+    { path = "rust/Cargo.toml", format = "sdist" },
+    { path = "rust/build.rs", format = "sdist" },
+    { path = "rust/src/**", format = "sdist" },
+]
+exclude = [
+    { path = "synapse/*.so", format = "sdist"}
+]
+
+[tool.poetry.build]
+script = "build_rust.py"
+generate-setup-file = true
+
+[tool.poetry.scripts]
+synapse_homeserver = "synapse.app.homeserver:main"
+synapse_worker = "synapse.app.generic_worker:main"
+synctl = "synapse._scripts.synctl:main"
+
+export_signing_key = "synapse._scripts.export_signing_key:main"
+generate_config = "synapse._scripts.generate_config:main"
+generate_log_config = "synapse._scripts.generate_log_config:main"
+generate_signing_key = "synapse._scripts.generate_signing_key:main"
+hash_password = "synapse._scripts.hash_password:main"
+register_new_matrix_user = "synapse._scripts.register_new_matrix_user:main"
+synapse_port_db = "synapse._scripts.synapse_port_db:main"
+synapse_review_recent_signups = "synapse._scripts.review_recent_signups:main"
+update_synapse_database = "synapse._scripts.update_synapse_database:main"
+
+[tool.poetry.dependencies]
+python = "^3.10.0"
+
+# Mandatory Dependencies
+# ----------------------
+# we use the TYPE_CHECKER.redefine method added in jsonschema 3.0.0
+jsonschema = ">=3.0.0"
+# 0.25.0 is the first version to support Python 3.14.
+# We can remove this once https://github.com/python-jsonschema/jsonschema/issues/1426 is fixed
+# and included in a release.
+rpds-py = ">=0.25.0"
+# We choose 2.0 as a lower bound: the most recent backwards incompatible release.
+# It seems generally available, judging by https://pkgs.org/search/?q=immutabledict
+immutabledict = ">=2.0"
+# We require 2.1.0 or higher for type hints. Previous guard was >= 1.1.0
+unpaddedbase64 = ">=2.1.0"
+# We require 2.0.0 for immutabledict support.
+canonicaljson = "^2.0.0"
+# we use the type definitions added in signedjson 1.1.
+signedjson = "^1.1.0"
+# validating SSL certs for IP addresses requires service_identity 18.1.
+service-identity = ">=18.1.0"
+# Twisted 18.9 introduces some logger improvements that the structured
+# logger utilises
+# Twisted 19.7.0 moves test helpers to a new module and deprecates the old location.
+# Twisted 21.2.0 introduces contextvar support.
+# We could likely bump this to 22.1 without making distro packagers'
+# lives hard (as of 2025-07, distro support is Ubuntu LTS: 22.1, Debian stable: 22.4,
+# RHEL 9: 22.10)
+Twisted = {extras = ["tls"], version = ">=21.2.0"}
+treq = ">=21.5.0"
+# Twisted has required pyopenssl 16.0 since about Twisted 16.6.
+pyOpenSSL = ">=16.0.0"
+PyYAML = ">=5.3"
+pyasn1 = ">=0.1.9"
+pyasn1-modules = ">=0.0.7"
+bcrypt = ">=3.1.7"
+# 10.0.1 minimum is mandatory here because of libwebp CVE-2023-4863.
+# Packagers that already took care of libwebp can lower that down to 5.4.0.
+Pillow = ">=10.0.1"
+# We use SortedDict.peekitem(), which was added in sortedcontainers 1.5.2.
+# 2.0.5 updates collections.abc imports to avoid Python 3.10 incompatibility.
+sortedcontainers = ">=2.0.5"
+pymacaroons = ">=0.13.0"
+msgpack = ">=0.5.2"
+phonenumbers = ">=8.2.0"
+# we use GaugeHistogramMetric, which was added in prom-client 0.4.0.
+# `prometheus_client.metrics` was added in 0.5.0, so we require that too.
+# We chose 0.6.0 as that is the current version in Debian Buster (oldstable).
+prometheus-client = ">=0.6.0"
+# we use `order`, which arrived in attrs 19.2.0.
+# Note: 21.1.0 broke `/sync`, see https://github.com/matrix-org/synapse/issues/9936
+attrs = ">=19.2.0,!=21.1.0"
+netaddr = ">=0.7.18"
+# Jinja 2.x is incompatible with MarkupSafe>=2.1. To ensure that admins do not
+# end up with a broken installation, with recent MarkupSafe but old Jinja, we
+# add a lower bound to the Jinja2 dependency.
+Jinja2 = ">=3.0"
+# 3.2.0 updates collections.abc imports to avoid Python 3.10 incompatibility.
+bleach = ">=3.2.0"
+# pydantic 2.12 depends on typing-extensions>=4.14.1
+typing-extensions = ">=4.14.1"
+# We enforce that we have a `cryptography` version that bundles an `openssl`
+# with the latest security patches.
+cryptography = ">=3.4.7"
+# ijson 3.1.4 fixes a bug with "." in property names
+ijson = ">=3.1.4"
+matrix-common = "^1.3.0"
+# We need packaging.verison.Version(...).major added in 20.0.
+packaging = ">=20.0"
+pydantic = [
+    { version = "~=2.8", python = "<3.14" },
+    { version = "~=2.12", python = ">=3.14" },
+]
+
+# This is for building the rust components during "poetry install", which
+# currently ignores the `build-system.requires` directive (c.f.
+# https://github.com/python-poetry/poetry/issues/6154). Both `pip install` and
+# `poetry build` do the right thing without this explicit dependency.
+#
+# This isn't really a dev-dependency, as `poetry install --without dev` will fail,
+# but the alternative is to add it to the main list of deps where it isn't
+# needed.
+setuptools_rust = ">=1.3"
+
+# This is used for parsing multipart responses
+python-multipart = ">=0.0.9"
+
+# Optional Dependencies
+# ---------------------
+matrix-synapse-ldap3 = { version = ">=0.1", optional = true }
+psycopg2 = { version = ">=2.8", markers = "platform_python_implementation != 'PyPy'", optional = true }
+psycopg2cffi = { version = ">=2.8", markers = "platform_python_implementation == 'PyPy'", optional = true }
+psycopg2cffi-compat = { version = "==1.1", markers = "platform_python_implementation == 'PyPy'", optional = true }
+pysaml2 = { version = ">=4.5.0", optional = true }
+authlib = { version = ">=0.15.1", optional = true }
+# systemd-python is necessary for logging to the systemd journal via
+# `systemd.journal.JournalHandler`, as is documented in
+# `contrib/systemd/log_config.yaml`.
+# Note: systemd-python 231 appears to have been yanked from pypi
+systemd-python = { version = ">=231", optional = true }
+# 4.6.3 removes usage of _PyGen_Send which is unavailable in CPython as of Python 3.10.
+lxml = { version = ">=4.6.3", optional = true }
+sentry-sdk = { version = ">=0.7.2", optional = true }
+opentracing = { version = ">=2.2.0", optional = true }
+# 4.2.0 updates collections.abc imports to avoid Python 3.10 incompatibility.
+jaeger-client = { version = ">=4.2.0", optional = true }
+txredisapi = { version = ">=1.4.7", optional = true }
+hiredis = { version = "*", optional = true }
+Pympler = { version = "*", optional = true }
+parameterized = { version = ">=0.7.4", optional = true }
+idna = { version = ">=2.5", optional = true }
+
+[tool.poetry.extras]
+# NB: Packages that should be part of `pip install matrix-synapse[all]` need to be specified
+# twice: once here, and once in the `all` extra.
+matrix-synapse-ldap3 = ["matrix-synapse-ldap3"]
+postgres = ["psycopg2", "psycopg2cffi", "psycopg2cffi-compat"]
+saml2 = ["pysaml2"]
+oidc = ["authlib"]
+# systemd-python is necessary for logging to the systemd journal via
+# `systemd.journal.JournalHandler`, as is documented in
+# `contrib/systemd/log_config.yaml`.
+systemd = ["systemd-python"]
+url-preview = ["lxml"]
+sentry = ["sentry-sdk"]
+opentracing = ["jaeger-client", "opentracing"]
+jwt = ["authlib"]
+# hiredis is not a *strict* dependency, but it makes things much faster.
+# (if it is not installed, we fall back to slow code.)
+redis = ["txredisapi", "hiredis"]
+# Required to use experimental `caches.track_memory_usage` config option.
+cache-memory = ["pympler"]
+test = ["parameterized", "idna"]
+
+# The duplication here is awful. I hate hate hate hate hate it. However, for now I want
+# to ensure you can still `pip install matrix-synapse[all]` like today. Two motivations:
+# 1) for new installations, I want instructions in existing documentation and tutorials
+#    out there to still work.
+# 2) I don't want to hard-code a list of extras into CI if I can help it. The ideal
+#    solution here would be something like https://github.com/python-poetry/poetry/issues/3413
+# Poetry 1.2's dependency groups might make this easier. But I'm not trying that out
+# until there's a stable release of 1.2.
+#
+# NB: the strings in this list must be *package* names, not extra names.
+# Some of our extra names _are_ package names, which can lead to great confusion.
+all = [
+    # matrix-synapse-ldap3
+    "matrix-synapse-ldap3",
+    # postgres
+    "psycopg2", "psycopg2cffi", "psycopg2cffi-compat",
+    # saml2
+    "pysaml2",
+    # oidc and jwt
+    "authlib",
+    # url-preview
+    "lxml",
+    # sentry
+    "sentry-sdk",
+    # opentracing
+    "jaeger-client", "opentracing",
+    # redis
+    "txredisapi", "hiredis",
+    # cache-memory
+    "pympler",
+    # omitted:
+    #   - test: it's useful to have this separate from dev deps in the olddeps job
+    #   - systemd: this is a system-based requirement
+]
+
+[tool.poetry.group.dev.dependencies]
+# We pin development dependencies in poetry.lock so that our tests don't start
+# failing on new releases. Keeping lower bounds loose here means that dependabot
+# can bump versions without having to update the content-hash in the lockfile.
+# This helps prevents merge conflicts when running a batch of dependabot updates.
+ruff = "0.14.3"
+
+# Typechecking
+lxml-stubs = ">=0.4.0"
+mypy = "*"
+mypy-zope = "*"
+types-bleach = ">=4.1.0"
+types-jsonschema = ">=3.2.0"
+types-netaddr = ">=0.8.0.6"
+types-opentracing = ">=2.4.2"
+types-Pillow = ">=8.3.4"
+types-psycopg2 = ">=2.9.9"
+types-pyOpenSSL = ">=20.0.7"
+types-PyYAML = ">=5.4.10"
+types-requests = ">=2.26.0"
+types-setuptools = ">=57.4.0"
+
+# Dependencies which are exclusively required by unit test code. This is
+# NOT a list of all modules that are necessary to run the unit tests.
+# Tests assume that all optional dependencies are installed.
+# parameterized<0.7.4 can create classes with names that would normally be invalid
+# identifiers. trial really does not like this when running with multiple workers.
+parameterized = ">=0.7.4"
+idna = ">=2.5"
+
+# The following are used by the release script
+click = ">=8.1.3"
+# GitPython was == 3.1.14; bumped to 3.1.20, the first release with type hints.
+GitPython = ">=3.1.20"
+markdown-it-py = ">=3.0.0"
+pygithub = ">=1.59"
+# The following are executed as commands by the release script.
+twine = "*"
+# Towncrier min version comes from https://github.com/matrix-org/synapse/pull/3425. Rationale unclear.
+towncrier = ">=18.6.0rc1"
+
+# Used for checking the Poetry lockfile
+tomli = ">=1.2.3"
+
 
 [build-system]
 # The upper bounds here are defensive, intended to prevent situations like
@@ -445,32 +391,26 @@ sdist-exclude = ["synapse/*.so"]
 # runtime errors caused by build system changes.
 # We are happy to raise these upper bounds upon request,
 # provided we check that it's safe to do so (i.e. that CI passes).
-requires = ["maturin>=1.0,<2.0"]
-build-backend = "maturin"
+requires = ["poetry-core>=1.1.0,<=2.1.3", "setuptools_rust>=1.3,<=1.11.1"]
+build-backend = "poetry.core.masonry.api"
 
 
 [tool.cibuildwheel]
 # Skip unsupported platforms (by us or by Rust).
-#
-# See https://cibuildwheel.readthedocs.io/en/stable/options/#build-skip for the
-# list of supported build targets.
-#
-# Also see `.github/workflows/release-artifacts.yml` for the list of
-# architectures we build for (based on the runner OS types we use), as well as
-# the platforms we exclude from testing in CI.
-#
+# See https://cibuildwheel.readthedocs.io/en/stable/options/#build-skip for the list of build targets.
 # We skip:
-#  - free-threaded cpython builds: these are not currently supported.
-#  - i686: We don't support 32-bit platforms.
-#  - *macosx*: we don't support building wheels for MacOS.
-skip = "cp3??t-* *i686* *macosx*"
-# Enable non-default builds. See the list of available options:
-# https://cibuildwheel.pypa.io/en/stable/options#enable
-#
+#  - CPython 3.8: EOLed
+#  - musllinux i686: excluded to reduce number of wheels we build.
+#    c.f. https://github.com/matrix-org/synapse/pull/12595#discussion_r963107677
+skip = "cp38* *-musllinux_i686"
+# Enable non-default builds.
 # "pypy" used to be included by default up until cibuildwheel 3.
 enable = "pypy"
 
 # We need a rust compiler.
+#
+# We temporarily pin Rust to 1.82.0 to work around
+# https://github.com/element-hq/synapse/issues/17988
 before-all =  "sh .ci/before_build_wheel.sh"
 environment= { PATH = "$PATH:$HOME/.cargo/bin" }
 
@@ -480,3 +420,12 @@ environment= { PATH = "$PATH:$HOME/.cargo/bin" }
 before-build = "rm -rf {project}/build"
 build-frontend = "build"
 test-command = "python -c 'from synapse.synapse_rust import sum_as_string; print(sum_as_string(1, 2))'"
+
+
+[tool.cibuildwheel.linux]
+# Wrap the repair command to correctly rename the built cpython wheels as ABI3.
+repair-wheel-command = "./.ci/scripts/auditwheel_wrapper.py -w {dest_dir} {wheel}"
+
+[tool.cibuildwheel.macos]
+# Wrap the repair command to correctly rename the built cpython wheels as ABI3.
+repair-wheel-command = "./.ci/scripts/auditwheel_wrapper.py --require-archs {delocate_archs} -w {dest_dir} {wheel}"

rust/src/duration.rs

@@ -1,56 +0,0 @@
-/*
- * This file is licensed under the Affero General Public License (AGPL) version 3.
- *
- * Copyright (C) 2025 Element Creations, Ltd
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * See the GNU Affero General Public License for more details:
- * <https://www.gnu.org/licenses/agpl-3.0.html>.
- */
-
-use once_cell::sync::OnceCell;
-use pyo3::{
-    types::{IntoPyDict, PyAnyMethods},
-    Bound, BoundObject, IntoPyObject, Py, PyAny, PyErr, PyResult, Python,
-};
-
-/// A reference to the `synapse.util.duration` module.
-static DURATION: OnceCell<Py<PyAny>> = OnceCell::new();
-
-/// Access to the `synapse.util.duration` module.
-fn duration_module(py: Python<'_>) -> PyResult<&Bound<'_, PyAny>> {
-    Ok(DURATION
-        .get_or_try_init(|| py.import("synapse.util.duration").map(Into::into))?
-        .bind(py))
-}
-
-/// Mirrors the `synapse.util.duration.Duration` Python class.
-pub struct SynapseDuration {
-    microseconds: u64,
-}
-
-impl SynapseDuration {
-    /// For now we only need to create durations from milliseconds.
-    pub fn from_milliseconds(milliseconds: u64) -> Self {
-        Self {
-            microseconds: milliseconds * 1_000,
-        }
-    }
-}
-
-impl<'py> IntoPyObject<'py> for &SynapseDuration {
-    type Target = PyAny;
-    type Output = Bound<'py, Self::Target>;
-    type Error = PyErr;
-
-    fn into_pyobject(self, py: Python<'py>) -> Result<Self::Output, Self::Error> {
-        let duration_module = duration_module(py)?;
-        let kwargs = [("microseconds", self.microseconds)].into_py_dict(py)?;
-        let duration_instance = duration_module.call_method("Duration", (), Some(&kwargs))?;
-        Ok(duration_instance.into_bound())
-    }
-}

rust/src/lib.rs

@@ -5,7 +5,6 @@ use pyo3::prelude::*;
 use pyo3_log::ResetHandle;
 
 pub mod acl;
-pub mod duration;
 pub mod errors;
 pub mod events;
 pub mod http;

rust/src/rendezvous/mod.rs

@@ -35,7 +35,6 @@ use ulid::Ulid;
 
 use self::session::Session;
 use crate::{
-    duration::SynapseDuration,
     errors::{NotFoundError, SynapseError},
     http::{http_request_from_twisted, http_response_to_twisted, HeaderMapPyExt},
     UnwrapInfallible,
@@ -133,8 +132,6 @@ impl RendezvousHandler {
             .unwrap_infallible()
             .unbind();
 
-        let eviction_duration = SynapseDuration::from_milliseconds(eviction_interval);
-
         // Construct a Python object so that we can get a reference to the
         // evict method and schedule it to run.
         let self_ = Py::new(
@@ -152,7 +149,7 @@ impl RendezvousHandler {
         let evict = self_.getattr(py, "_evict")?;
         homeserver.call_method0("get_clock")?.call_method(
             "looping_call",
-            (evict, &eviction_duration),
+            (evict, eviction_interval),
             None,
         )?;
 

schema/synapse-config.schema.yaml

@@ -1,5 +1,5 @@
 $schema: https://element-hq.github.io/synapse/latest/schema/v1/meta.schema.json
-$id: https://element-hq.github.io/synapse/schema/synapse/v1.144/synapse-config.schema.json
+$id: https://element-hq.github.io/synapse/schema/synapse/v1.142/synapse-config.schema.json
 type: object
 properties:
   modules:

scripts-dev/check_schema_delta.py

@@ -9,10 +9,15 @@ from typing import Any
 
 import click
 import git
-import sqlglot
-import sqlglot.expressions
 
 SCHEMA_FILE_REGEX = re.compile(r"^synapse/storage/schema/(.*)/delta/(.*)/(.*)$")
+INDEX_CREATION_REGEX = re.compile(
+    r"CREATE .*INDEX .*ON ([a-z_0-9]+)", flags=re.IGNORECASE
+)
+INDEX_DELETION_REGEX = re.compile(r"DROP .*INDEX ([a-z_0-9]+)", flags=re.IGNORECASE)
+TABLE_CREATION_REGEX = re.compile(
+    r"CREATE .*TABLE.* ([a-z_0-9]+)\s*\(", flags=re.IGNORECASE
+)
 
 # The base branch we want to check against. We use the main development branch
 # on the assumption that is what we are developing against.
@@ -136,9 +141,6 @@ def main(force_colors: bool) -> None:
             color=force_colors,
         )
 
-        # Mark this run as not successful, but continue so that we report *all*
-        # errors.
-        return_code = 1
     else:
         click.secho(
             f"All deltas are in the correct folder: {current_schema_version}!",
@@ -151,90 +153,60 @@ def main(force_colors: bool) -> None:
     # and delta files are also numbered in order.
     changed_delta_files.sort()
 
-    success = check_schema_delta(changed_delta_files, force_colors)
-    if not success:
-        return_code = 1
+    # Now check that we're not trying to create or drop indices. If we want to
+    # do that they should be in background updates. The exception is when we
+    # create indices on tables we've just created.
+    created_tables = set()
+    for delta_file in changed_delta_files:
+        with open(delta_file) as fd:
+            delta_lines = fd.readlines()
+
+        for line in delta_lines:
+            # Strip SQL comments
+            line = line.split("--", maxsplit=1)[0]
+
+            # Check and track any tables we create
+            match = TABLE_CREATION_REGEX.search(line)
+            if match:
+                table_name = match.group(1)
+                created_tables.add(table_name)
+
+            # Check for dropping indices, these are always banned
+            match = INDEX_DELETION_REGEX.search(line)
+            if match:
+                clause = match.group()
+
+                click.secho(
+                    f"Found delta with index deletion: '{clause}' in {delta_file}",
+                    fg="red",
+                    bold=True,
+                    color=force_colors,
+                )
+                click.secho(
+                    " ↪ These should be in background updates.",
+                )
+                return_code = 1
+
+            # Check for index creation, which is only allowed for tables we've
+            # created.
+            match = INDEX_CREATION_REGEX.search(line)
+            if match:
+                clause = match.group()
+                table_name = match.group(1)
+                if table_name not in created_tables:
+                    click.secho(
+                        f"Found delta with index creation for existing table: '{clause}' in {delta_file}",
+                        fg="red",
+                        bold=True,
+                        color=force_colors,
+                    )
+                    click.secho(
+                        " ↪ These should be in background updates (or the table should be created in the same delta).",
+                    )
+                    return_code = 1
 
     click.get_current_context().exit(return_code)
 
 
-def check_schema_delta(delta_files: list[str], force_colors: bool) -> bool:
-    """Check that the given schema delta files do not create or drop indices
-    inappropriately.
-
-    Index creation is only allowed on tables created in the same set of deltas.
-
-    Index deletion is never allowed and should be done in background updates.
-
-    Returns:
-        True if all checks succeeded, False if at least one failed.
-    """
-
-    # The tables created in this delta
-    created_tables = set[str]()
-
-    # The indices created/dropped in this delta, each a tuple of (table_name, sql)
-    created_indices = list[tuple[str, str]]()
-
-    # The indices dropped in this delta, just the sql
-    dropped_indices = list[str]()
-
-    for delta_file in delta_files:
-        with open(delta_file) as fd:
-            delta_contents = fd.read()
-
-        # Assume the SQL dialect from the file extension, defaulting to Postgres.
-        sql_lang = "postgres"
-        if delta_file.endswith(".sqlite"):
-            sql_lang = "sqlite"
-
-        statements = sqlglot.parse(delta_contents, read=sql_lang)
-
-        for statement in statements:
-            if isinstance(statement, sqlglot.expressions.Create):
-                if statement.kind == "TABLE":
-                    assert isinstance(statement.this, sqlglot.expressions.Schema)
-                    assert isinstance(statement.this.this, sqlglot.expressions.Table)
-
-                    table_name = statement.this.this.name
-                    created_tables.add(table_name)
-                elif statement.kind == "INDEX":
-                    assert isinstance(statement.this, sqlglot.expressions.Index)
-
-                    table_name = statement.this.args["table"].name
-                    created_indices.append((table_name, statement.sql()))
-            elif isinstance(statement, sqlglot.expressions.Drop):
-                if statement.kind == "INDEX":
-                    dropped_indices.append(statement.sql())
-
-    success = True
-    for table_name, clause in created_indices:
-        if table_name not in created_tables:
-            click.secho(
-                f"Found delta with index creation for existing table: '{clause}'",
-                fg="red",
-                bold=True,
-                color=force_colors,
-            )
-            click.secho(
-                " ↪ These should be in background updates (or the table should be created in the same delta).",
-            )
-            success = False
-
-    for clause in dropped_indices:
-        click.secho(
-            f"Found delta with index deletion: '{clause}'",
-            fg="red",
-            bold=True,
-            color=force_colors,
-        )
-        click.secho(
-            " ↪ These should be in background updates.",
-        )
-        success = False
-
-    return success
-
-
 if __name__ == "__main__":
     main()

scripts-dev/complement.sh

@@ -72,151 +72,153 @@ For help on arguments to 'go test', run 'go help testflag'.
 EOF
 }
 
-# We use a function to wrap the script logic so that we can use `return` to exit early
-# if needed. This is particularly useful so that this script can be sourced by other
-# scripts without exiting the calling subshell (composable). This allows us to share
-# variables like `SYNAPSE_SUPPORTED_COMPLEMENT_TEST_PACKAGES` with other scripts.
-#
-# Returns an exit code of 0 on success, or 1 on failure.
-main() {
-  # parse our arguments
-  skip_docker_build=""
-  skip_complement_run=""
-  while [ $# -ge 1 ]; do
+# parse our arguments
+skip_docker_build=""
+skip_complement_run=""
+while [ $# -ge 1 ]; do
     arg=$1
     case "$arg" in
-      "-h")
-        usage
-        return 1
-        ;;
-      "-f"|"--fast")
-        skip_docker_build=1
-        ;;
-      "--build-only")
-        skip_complement_run=1
-        ;;
-      "-e"|"--editable")
-        use_editable_synapse=1
-        ;;
-      "--rebuild-editable")
-        rebuild_editable_synapse=1
-        ;;
-      *)
-        # unknown arg: presumably an argument to gotest. break the loop.
-        break
+        "-h")
+            usage
+            exit 1
+            ;;
+        "-f"|"--fast")
+            skip_docker_build=1
+            ;;
+        "--build-only")
+            skip_complement_run=1
+            ;;
+        "-e"|"--editable")
+            use_editable_synapse=1
+            ;;
+        "--rebuild-editable")
+            rebuild_editable_synapse=1
+            ;;
+        *)
+            # unknown arg: presumably an argument to gotest. break the loop.
+            break
     esac
     shift
-  done
+done
 
-  # enable buildkit for the docker builds
-  export DOCKER_BUILDKIT=1
+# enable buildkit for the docker builds
+export DOCKER_BUILDKIT=1
 
-  # Determine whether to use the docker or podman container runtime.
-  if [ -n "$PODMAN" ]; then
-    export CONTAINER_RUNTIME=podman
-    export DOCKER_HOST=unix://$XDG_RUNTIME_DIR/podman/podman.sock
-    export BUILDAH_FORMAT=docker
-    export COMPLEMENT_HOSTNAME_RUNNING_COMPLEMENT=host.containers.internal
-  else
-    export CONTAINER_RUNTIME=docker
-  fi
+# Determine whether to use the docker or podman container runtime.
+if [ -n "$PODMAN" ]; then
+  export CONTAINER_RUNTIME=podman
+  export DOCKER_HOST=unix://$XDG_RUNTIME_DIR/podman/podman.sock
+  export BUILDAH_FORMAT=docker
+  export COMPLEMENT_HOSTNAME_RUNNING_COMPLEMENT=host.containers.internal
+else
+  export CONTAINER_RUNTIME=docker
+fi
 
-  # Change to the repository root
-  cd "$(dirname $0)/.."
+# Change to the repository root
+cd "$(dirname $0)/.."
 
-  # Check for a user-specified Complement checkout
-  if [[ -z "$COMPLEMENT_DIR" ]]; then
-    COMPLEMENT_REF=${COMPLEMENT_REF:-main}
-    echo "COMPLEMENT_DIR not set. Fetching Complement checkout from ${COMPLEMENT_REF}..."
-    wget -Nq https://github.com/matrix-org/complement/archive/${COMPLEMENT_REF}.tar.gz
-    tar -xzf ${COMPLEMENT_REF}.tar.gz
-    COMPLEMENT_DIR=complement-${COMPLEMENT_REF}
-    echo "Checkout available at 'complement-${COMPLEMENT_REF}'"
-  fi
+# Check for a user-specified Complement checkout
+if [[ -z "$COMPLEMENT_DIR" ]]; then
+  COMPLEMENT_REF=${COMPLEMENT_REF:-main}
+  echo "COMPLEMENT_DIR not set. Fetching Complement checkout from ${COMPLEMENT_REF}..."
+  wget -Nq https://github.com/matrix-org/complement/archive/${COMPLEMENT_REF}.tar.gz
+  tar -xzf ${COMPLEMENT_REF}.tar.gz
+  COMPLEMENT_DIR=complement-${COMPLEMENT_REF}
+  echo "Checkout available at 'complement-${COMPLEMENT_REF}'"
+fi
 
-  if [ -n "$use_editable_synapse" ]; then
+if [ -n "$use_editable_synapse" ]; then
     if [[ -e synapse/synapse_rust.abi3.so ]]; then
-      # In an editable install, back up the host's compiled Rust module to prevent
-      # inconvenience; the container will overwrite the module with its own copy.
-      mv -n synapse/synapse_rust.abi3.so synapse/synapse_rust.abi3.so~host
-      # And restore it on exit:
-      synapse_pkg=`realpath synapse`
-      trap "mv -f '$synapse_pkg/synapse_rust.abi3.so~host' '$synapse_pkg/synapse_rust.abi3.so'" EXIT
+        # In an editable install, back up the host's compiled Rust module to prevent
+        # inconvenience; the container will overwrite the module with its own copy.
+        mv -n synapse/synapse_rust.abi3.so synapse/synapse_rust.abi3.so~host
+        # And restore it on exit:
+        synapse_pkg=`realpath synapse`
+        trap "mv -f '$synapse_pkg/synapse_rust.abi3.so~host' '$synapse_pkg/synapse_rust.abi3.so'" EXIT
     fi
 
     editable_mount="$(realpath .):/editable-src:z"
     if [ -n "$rebuild_editable_synapse" ]; then
-      unset skip_docker_build
-    elif $CONTAINER_RUNTIME inspect complement-synapse-editable &>/dev/null; then
-      # complement-synapse-editable already exists: see if we can still use it:
-      # - The Rust module must still be importable; it will fail to import if the Rust source has changed.
-      # - The Poetry lock file must be the same (otherwise we assume dependencies have changed)
-
-      # First set up the module in the right place for an editable installation.
-      $CONTAINER_RUNTIME run --rm -v $editable_mount --entrypoint 'cp' complement-synapse-editable -- /synapse_rust.abi3.so.bak /editable-src/synapse/synapse_rust.abi3.so
-
-      if ($CONTAINER_RUNTIME run --rm -v $editable_mount --entrypoint 'python' complement-synapse-editable -c 'import synapse.synapse_rust' \
-        && $CONTAINER_RUNTIME run --rm -v $editable_mount --entrypoint 'diff' complement-synapse-editable --brief /editable-src/poetry.lock /poetry.lock.bak); then
-        skip_docker_build=1
-      else
-        echo "Editable Synapse image is stale. Will rebuild."
         unset skip_docker_build
-      fi
-    fi
-  fi
+    elif $CONTAINER_RUNTIME inspect complement-synapse-editable &>/dev/null; then
+        # complement-synapse-editable already exists: see if we can still use it:
+        # - The Rust module must still be importable; it will fail to import if the Rust source has changed.
+        # - The Poetry lock file must be the same (otherwise we assume dependencies have changed)
 
-  if [ -z "$skip_docker_build" ]; then
+        # First set up the module in the right place for an editable installation.
+        $CONTAINER_RUNTIME run --rm -v $editable_mount --entrypoint 'cp' complement-synapse-editable -- /synapse_rust.abi3.so.bak /editable-src/synapse/synapse_rust.abi3.so
+
+        if ($CONTAINER_RUNTIME run --rm -v $editable_mount --entrypoint 'python' complement-synapse-editable -c 'import synapse.synapse_rust' \
+            && $CONTAINER_RUNTIME run --rm -v $editable_mount --entrypoint 'diff' complement-synapse-editable --brief /editable-src/poetry.lock /poetry.lock.bak); then
+            skip_docker_build=1
+        else
+            echo "Editable Synapse image is stale. Will rebuild."
+            unset skip_docker_build
+        fi
+    fi
+fi
+
+if [ -z "$skip_docker_build" ]; then
     if [ -n "$use_editable_synapse" ]; then
 
-      # Build a special image designed for use in development with editable
-      # installs.
-      $CONTAINER_RUNTIME build -t synapse-editable \
-        -f "docker/editable.Dockerfile" .
+        # Build a special image designed for use in development with editable
+        # installs.
+        $CONTAINER_RUNTIME build -t synapse-editable \
+            -f "docker/editable.Dockerfile" .
 
-      $CONTAINER_RUNTIME build -t synapse-workers-editable \
-        --build-arg FROM=synapse-editable \
-        -f "docker/Dockerfile-workers" .
+        $CONTAINER_RUNTIME build -t synapse-workers-editable \
+            --build-arg FROM=synapse-editable \
+            -f "docker/Dockerfile-workers" .
 
-      $CONTAINER_RUNTIME build -t complement-synapse-editable \
-        --build-arg FROM=synapse-workers-editable \
-        -f "docker/complement/Dockerfile" "docker/complement"
+        $CONTAINER_RUNTIME build -t complement-synapse-editable \
+            --build-arg FROM=synapse-workers-editable \
+            -f "docker/complement/Dockerfile" "docker/complement"
 
-      # Prepare the Rust module
-      $CONTAINER_RUNTIME run --rm -v $editable_mount --entrypoint 'cp' complement-synapse-editable -- /synapse_rust.abi3.so.bak /editable-src/synapse/synapse_rust.abi3.so
+        # Prepare the Rust module
+        $CONTAINER_RUNTIME run --rm -v $editable_mount --entrypoint 'cp' complement-synapse-editable -- /synapse_rust.abi3.so.bak /editable-src/synapse/synapse_rust.abi3.so
 
     else
 
-      # Build the base Synapse image from the local checkout
-      echo_if_github "::group::Build Docker image: matrixdotorg/synapse"
-      $CONTAINER_RUNTIME build -t matrixdotorg/synapse \
-      --build-arg TEST_ONLY_SKIP_DEP_HASH_VERIFICATION \
-      --build-arg TEST_ONLY_IGNORE_POETRY_LOCKFILE \
-      -f "docker/Dockerfile" .
-      echo_if_github "::endgroup::"
+        # Build the base Synapse image from the local checkout
+        echo_if_github "::group::Build Docker image: matrixdotorg/synapse"
+        $CONTAINER_RUNTIME build -t matrixdotorg/synapse \
+        --build-arg TEST_ONLY_SKIP_DEP_HASH_VERIFICATION \
+        --build-arg TEST_ONLY_IGNORE_POETRY_LOCKFILE \
+        -f "docker/Dockerfile" .
+        echo_if_github "::endgroup::"
 
-      # Build the workers docker image (from the base Synapse image we just built).
-      echo_if_github "::group::Build Docker image: matrixdotorg/synapse-workers"
-      $CONTAINER_RUNTIME build -t matrixdotorg/synapse-workers -f "docker/Dockerfile-workers" .
-      echo_if_github "::endgroup::"
+        # Build the workers docker image (from the base Synapse image we just built).
+        echo_if_github "::group::Build Docker image: matrixdotorg/synapse-workers"
+        $CONTAINER_RUNTIME build -t matrixdotorg/synapse-workers -f "docker/Dockerfile-workers" .
+        echo_if_github "::endgroup::"
 
-      # Build the unified Complement image (from the worker Synapse image we just built).
-      echo_if_github "::group::Build Docker image: complement/Dockerfile"
-      $CONTAINER_RUNTIME build -t complement-synapse \
-        `# This is the tag we end up pushing to the registry (see` \
-        `# .github/workflows/push_complement_image.yml) so let's just label it now` \
-        `# so people can reference it by the same name locally.` \
-        -t ghcr.io/element-hq/synapse/complement-synapse \
-        -f "docker/complement/Dockerfile" "docker/complement"
-      echo_if_github "::endgroup::"
+        # Build the unified Complement image (from the worker Synapse image we just built).
+        echo_if_github "::group::Build Docker image: complement/Dockerfile"
+        $CONTAINER_RUNTIME build -t complement-synapse \
+            `# This is the tag we end up pushing to the registry (see` \
+            `# .github/workflows/push_complement_image.yml) so let's just label it now` \
+            `# so people can reference it by the same name locally.` \
+            -t ghcr.io/element-hq/synapse/complement-synapse \
+            -f "docker/complement/Dockerfile" "docker/complement"
+        echo_if_github "::endgroup::"
 
     fi
-  
-    echo "Docker images built."
-  else
-    echo "Skipping Docker image build as requested."
-  fi
+fi
 
-  test_packages=(
+if [ -n "$skip_complement_run" ]; then
+    echo "Skipping Complement run as requested."
+    exit
+fi
+
+export COMPLEMENT_BASE_IMAGE=complement-synapse
+if [ -n "$use_editable_synapse" ]; then
+    export COMPLEMENT_BASE_IMAGE=complement-synapse-editable
+    export COMPLEMENT_HOST_MOUNTS="$editable_mount"
+fi
+
+extra_test_args=()
+
+test_packages=(
     ./tests/csapi
     ./tests
     ./tests/msc3874
@@ -229,104 +231,71 @@ main() {
     ./tests/msc4140
     ./tests/msc4155
     ./tests/msc4306
-  )
+)
 
-  # Export the list of test packages as a space-separated environment variable, so other
-  # scripts can use it.
-  export SYNAPSE_SUPPORTED_COMPLEMENT_TEST_PACKAGES="${test_packages[@]}"
+# Enable dirty runs, so tests will reuse the same container where possible.
+# This significantly speeds up tests, but increases the possibility of test pollution.
+export COMPLEMENT_ENABLE_DIRTY_RUNS=1
 
-  export COMPLEMENT_BASE_IMAGE=complement-synapse
-  if [ -n "$use_editable_synapse" ]; then
-    export COMPLEMENT_BASE_IMAGE=complement-synapse-editable
-    export COMPLEMENT_HOST_MOUNTS="$editable_mount"
-  fi
+# All environment variables starting with PASS_ will be shared.
+# (The prefix is stripped off before reaching the container.)
+export COMPLEMENT_SHARE_ENV_PREFIX=PASS_
 
-  # Enable dirty runs, so tests will reuse the same container where possible.
-  # This significantly speeds up tests, but increases the possibility of test pollution.
-  export COMPLEMENT_ENABLE_DIRTY_RUNS=1
+# It takes longer than 10m to run the whole suite.
+extra_test_args+=("-timeout=60m")
 
-  # All environment variables starting with PASS_ will be shared.
-  # (The prefix is stripped off before reaching the container.)
-  export COMPLEMENT_SHARE_ENV_PREFIX=PASS_
+if [[ -n "$WORKERS" ]]; then
+  # Use workers.
+  export PASS_SYNAPSE_COMPLEMENT_USE_WORKERS=true
 
-  # * -count=1: Only run tests once, and disable caching for tests.
-  # * -v: Output test logs, even if those tests pass.
-  # * -tags=synapse_blacklist: Enable the `synapse_blacklist` build tag, which is
-  #   necessary for `runtime.Synapse` checks/skips to work in the tests
-  test_args=(
-    -v
-    -tags="synapse_blacklist"
-    -count=1
-  )
+  # Pass through the workers defined. If none, it will be an empty string
+  export PASS_SYNAPSE_WORKER_TYPES="$WORKER_TYPES"
 
-  # It takes longer than 10m to run the whole suite.
-  test_args+=("-timeout=60m")
+  # Workers can only use Postgres as a database.
+  export PASS_SYNAPSE_COMPLEMENT_DATABASE=postgres
 
-  if [[ -n "$WORKERS" ]]; then
-    # Use workers.
-    export PASS_SYNAPSE_COMPLEMENT_USE_WORKERS=true
+  # And provide some more configuration to complement.
 
-    # Pass through the workers defined. If none, it will be an empty string
-    export PASS_SYNAPSE_WORKER_TYPES="$WORKER_TYPES"
-
-    # Workers can only use Postgres as a database.
+  # It can take quite a while to spin up a worker-mode Synapse for the first
+  # time (the main problem is that we start 14 python processes for each test,
+  # and complement likes to do two of them in parallel).
+  export COMPLEMENT_SPAWN_HS_TIMEOUT_SECS=120
+else
+  export PASS_SYNAPSE_COMPLEMENT_USE_WORKERS=
+  if [[ -n "$POSTGRES" ]]; then
     export PASS_SYNAPSE_COMPLEMENT_DATABASE=postgres
-
-    # And provide some more configuration to complement.
-
-    # It can take quite a while to spin up a worker-mode Synapse for the first
-    # time (the main problem is that we start 14 python processes for each test,
-    # and complement likes to do two of them in parallel).
-    export COMPLEMENT_SPAWN_HS_TIMEOUT_SECS=120
   else
-    export PASS_SYNAPSE_COMPLEMENT_USE_WORKERS=
-    if [[ -n "$POSTGRES" ]]; then
-      export PASS_SYNAPSE_COMPLEMENT_DATABASE=postgres
-    else
-      export PASS_SYNAPSE_COMPLEMENT_DATABASE=sqlite
-    fi
+    export PASS_SYNAPSE_COMPLEMENT_DATABASE=sqlite
   fi
-
-  if [[ -n "$ASYNCIO_REACTOR" ]]; then
-    # Enable the Twisted asyncio reactor
-    export PASS_SYNAPSE_COMPLEMENT_USE_ASYNCIO_REACTOR=true
-  fi
-
-  if [[ -n "$UNIX_SOCKETS" ]]; then
-    # Enable full on Unix socket mode for Synapse, Redis and Postgresql
-    export PASS_SYNAPSE_USE_UNIX_SOCKET=1
-  fi
-
-  if [[ -n "$SYNAPSE_TEST_LOG_LEVEL" ]]; then
-    # Set the log level to what is desired
-    export PASS_SYNAPSE_LOG_LEVEL="$SYNAPSE_TEST_LOG_LEVEL"
-
-    # Allow logging sensitive things (currently SQL queries & parameters).
-    # (This won't have any effect if we're not logging at DEBUG level overall.)
-    # Since this is just a test suite, this is fine and won't reveal anyone's
-    # personal information
-    export PASS_SYNAPSE_LOG_SENSITIVE=1
-  fi
-
-  # Log a few more useful things for a developer attempting to debug something
-  # particularly tricky.
-  export PASS_SYNAPSE_LOG_TESTING=1
-
-  if [ -n "$skip_complement_run" ]; then
-    echo "Skipping Complement run as requested."
-    return 0
-  fi
-  
-  # Run the tests!
-  echo "Running Complement with ${test_args[@]} $@ ${test_packages[@]}"
-  cd "$COMPLEMENT_DIR"
-  go test "${test_args[@]}" "$@" "${test_packages[@]}"
-}
-
-main "$@"
-# For any non-zero exit code (indicating some sort of error happened), we want to exit
-# with that code.
-exit_code=$?
-if [ $exit_code -ne 0 ]; then
-    exit $exit_code
 fi
+
+if [[ -n "$ASYNCIO_REACTOR" ]]; then
+  # Enable the Twisted asyncio reactor
+  export PASS_SYNAPSE_COMPLEMENT_USE_ASYNCIO_REACTOR=true
+fi
+
+if [[ -n "$UNIX_SOCKETS" ]]; then
+  # Enable full on Unix socket mode for Synapse, Redis and Postgresql
+  export PASS_SYNAPSE_USE_UNIX_SOCKET=1
+fi
+
+if [[ -n "$SYNAPSE_TEST_LOG_LEVEL" ]]; then
+  # Set the log level to what is desired
+  export PASS_SYNAPSE_LOG_LEVEL="$SYNAPSE_TEST_LOG_LEVEL"
+
+  # Allow logging sensitive things (currently SQL queries & parameters).
+  # (This won't have any effect if we're not logging at DEBUG level overall.)
+  # Since this is just a test suite, this is fine and won't reveal anyone's
+  # personal information
+  export PASS_SYNAPSE_LOG_SENSITIVE=1
+fi
+
+# Log a few more useful things for a developer attempting to debug something
+# particularly tricky.
+export PASS_SYNAPSE_LOG_TESTING=1
+
+# Run the tests!
+echo "Images built; running complement with ${extra_test_args[@]} $@ ${test_packages[@]}"
+cd "$COMPLEMENT_DIR"
+
+go test -v -tags "synapse_blacklist" -count=1 "${extra_test_args[@]}" "$@" "${test_packages[@]}"

scripts-dev/federation_client.py

@@ -145,7 +145,7 @@ def request(
     print("Requesting %s" % dest, file=sys.stderr)
 
     s = requests.Session()
-    s.mount("matrix-federation://", MatrixConnectionAdapter(verify_tls=verify_tls))
+    s.mount("matrix-federation://", MatrixConnectionAdapter())
 
     headers: dict[str, str] = {
         "Authorization": authorization_headers[0],
@@ -267,17 +267,6 @@ def read_args_from_config(args: argparse.Namespace) -> None:
 
 
 class MatrixConnectionAdapter(HTTPAdapter):
-    """
-    A Matrix federation-aware HTTP Adapter.
-    """
-
-    verify_tls: bool
-    """whether to verify the remote server's TLS certificate."""
-
-    def __init__(self, verify_tls: bool = True) -> None:
-        self.verify_tls = verify_tls
-        super().__init__()
-
     def send(
         self,
         request: PreparedRequest,
@@ -291,7 +280,7 @@ class MatrixConnectionAdapter(HTTPAdapter):
         assert isinstance(request.url, str)
         parsed = urlparse.urlsplit(request.url)
         server_name = parsed.netloc
-        well_known = self._get_well_known(parsed.netloc, verify_tls=self.verify_tls)
+        well_known = self._get_well_known(parsed.netloc)
 
         if well_known:
             server_name = well_known
@@ -329,21 +318,6 @@ class MatrixConnectionAdapter(HTTPAdapter):
         print(
             f"Connecting to {host}:{port} with SNI {ssl_server_name}", file=sys.stderr
         )
-
-        if proxies:
-            scheme = parsed.scheme
-            if isinstance(scheme, bytes):
-                scheme = scheme.decode("utf-8")
-
-            proxy_for_scheme = proxies.get(scheme)
-            if proxy_for_scheme:
-                return self.proxy_manager_for(proxy_for_scheme).connection_from_host(
-                    host,
-                    port=port,
-                    scheme="https",
-                    pool_kwargs={"server_hostname": ssl_server_name},
-                )
-
         return self.poolmanager.connection_from_host(
             host,
             port=port,
@@ -394,7 +368,7 @@ class MatrixConnectionAdapter(HTTPAdapter):
             return server_name, 8448, server_name
 
     @staticmethod
-    def _get_well_known(server_name: str, verify_tls: bool = True) -> str | None:
+    def _get_well_known(server_name: str) -> str | None:
         if ":" in server_name:
             # explicit port, or ipv6 literal. Either way, no .well-known
             return None
@@ -405,7 +379,7 @@ class MatrixConnectionAdapter(HTTPAdapter):
         print(f"fetching {uri}", file=sys.stderr)
 
         try:
-            resp = requests.get(uri, verify=verify_tls)
+            resp = requests.get(uri)
             if resp.status_code != 200:
                 print("%s gave %i" % (uri, resp.status_code), file=sys.stderr)
                 return None

scripts-dev/release.py

@@ -32,7 +32,7 @@ import time
 import urllib.request
 from os import path
 from tempfile import TemporaryDirectory
-from typing import Any
+from typing import Any, Match
 
 import attr
 import click
@@ -291,12 +291,6 @@ def _prepare() -> None:
     synapse_repo.git.add("-u")
     subprocess.run("git diff --cached", shell=True)
 
-    print(
-        "Consider any upcoming platform deprecations that should be mentioned in the changelog. (e.g. upcoming Python, PostgreSQL or SQLite deprecations)"
-    )
-    print(
-        "Platform deprecations should be mentioned at least 1 release prior to being unsupported."
-    )
     if click.confirm("Edit changelog?", default=False):
         click.edit(filename="CHANGES.md")
 
@@ -968,6 +962,10 @@ def generate_and_write_changelog(
     new_changes = new_changes.replace(
         "No significant changes.", f"No significant changes since {current_version}."
     )
+    new_changes += build_dependabot_changelog(
+        repo,
+        current_version,
+    )
 
     # Prepend changes to changelog
     with open("CHANGES.md", "r+") as f:
@@ -982,5 +980,49 @@ def generate_and_write_changelog(
         os.remove(filename)
 
 
+def build_dependabot_changelog(repo: Repo, current_version: version.Version) -> str:
+    """Summarise dependabot commits between `current_version` and `release_branch`.
+
+    Returns an empty string if there have been no such commits; otherwise outputs a
+    third-level markdown header followed by an unordered list."""
+    last_release_commit = repo.tag("v" + str(current_version)).commit
+    rev_spec = f"{last_release_commit.hexsha}.."
+    commits = list(git.objects.Commit.iter_items(repo, rev_spec))
+    messages = []
+    for commit in reversed(commits):
+        if commit.author.name == "dependabot[bot]":
+            message: str | bytes = commit.message
+            if isinstance(message, bytes):
+                message = message.decode("utf-8")
+            messages.append(message.split("\n", maxsplit=1)[0])
+
+    if not messages:
+        print(f"No dependabot commits in range {rev_spec}", file=sys.stderr)
+        return ""
+
+    messages.sort()
+
+    def replacer(match: Match[str]) -> str:
+        desc = match.group(1)
+        number = match.group(2)
+        return f"* {desc}. ([\\#{number}](https://github.com/element-hq/synapse/issues/{number}))"
+
+    for i, message in enumerate(messages):
+        messages[i] = re.sub(r"(.*) \(#(\d+)\)$", replacer, message)
+    messages.insert(0, "### Updates to locked dependencies\n")
+    # Add an extra blank line to the bottom of the section
+    messages.append("")
+    return "\n".join(messages)
+
+
+@cli.command()
+@click.argument("since")
+def test_dependabot_changelog(since: str) -> None:
+    """Test building the dependabot changelog.
+
+    Summarises all dependabot commits between the SINCE tag and the current git HEAD."""
+    print(build_dependabot_changelog(git.Repo("."), version.Version(since)))
+
+
 if __name__ == "__main__":
     cli()

synapse/_scripts/register_new_matrix_user.py

@@ -26,7 +26,7 @@ import hashlib
 import hmac
 import logging
 import sys
-from typing import Any, Callable, Iterable, TextIO
+from typing import Any, Callable
 
 import requests
 import yaml
@@ -244,7 +244,6 @@ def main() -> None:
     group.add_argument(
         "-c",
         "--config",
-        action="append",
         type=argparse.FileType("r"),
         help="Path to server config file. Used to read in shared secret.",
     )
@@ -265,7 +264,7 @@ def main() -> None:
 
     config: dict[str, Any] | None = None
     if "config" in args and args.config:
-        config = _read_config_files(args.config)
+        config = yaml.safe_load(args.config)
 
     if args.shared_secret:
         secret = args.shared_secret
@@ -327,33 +326,6 @@ def main() -> None:
     )
 
 
-# Adapted from synapse.config._base.
-def _read_config_files(config_files: Iterable[TextIO]) -> dict[str, Any]:
-    """Read the config files and shallowly merge them into a dict.
-
-    Successive configurations are shallowly merged into ones provided earlier,
-    i.e., entirely replacing top-level sections of the configuration.
-
-    Args:
-        config_files: A list of the config files to read
-
-    Returns:
-        The configuration dictionary.
-    """
-    specified_config = {}
-    for config_file in config_files:
-        yaml_config = yaml.safe_load(config_file)
-
-        if not isinstance(yaml_config, dict):
-            err = "File %r is empty or doesn't parse into a key-value map. IGNORING."
-            print(err % (config_file,))
-            continue
-
-        specified_config.update(yaml_config)
-
-    return specified_config
-
-
 def _read_file(file_path: Any, config_path: str) -> str:
     """Check the given file exists, and read it into a string
 

synapse/_scripts/synapse_port_db.py

@@ -58,7 +58,6 @@ from synapse.storage.database import DatabasePool, LoggingTransaction, make_conn
 from synapse.storage.databases.main import FilteringWorkerStore
 from synapse.storage.databases.main.account_data import AccountDataWorkerStore
 from synapse.storage.databases.main.client_ips import ClientIpBackgroundUpdateStore
-from synapse.storage.databases.main.delayed_events import DelayedEventsStore
 from synapse.storage.databases.main.deviceinbox import DeviceInboxBackgroundUpdateStore
 from synapse.storage.databases.main.devices import DeviceBackgroundUpdateStore
 from synapse.storage.databases.main.e2e_room_keys import EndToEndRoomKeyBackgroundStore
@@ -108,7 +107,6 @@ logger = logging.getLogger("synapse_port_db")
 BOOLEAN_COLUMNS = {
     "access_tokens": ["used"],
     "account_validity": ["email_sent"],
-    "delayed_events": ["is_processed"],
     "device_lists_changes_in_room": ["converted_to_destinations"],
     "device_lists_outbound_pokes": ["sent"],
     "devices": ["hidden"],
@@ -274,7 +272,6 @@ class Store(
     RelationsWorkerStore,
     EventFederationWorkerStore,
     SlidingSyncStore,
-    DelayedEventsStore,
 ):
     def execute(self, f: Callable[..., R], *args: Any, **kwargs: Any) -> Awaitable[R]:
         return self.db_pool.runInteraction(f.__name__, f, *args, **kwargs)

synapse/api/auth/mas.py

@@ -17,6 +17,7 @@ from typing import TYPE_CHECKING
 from urllib.parse import urlencode
 
 from pydantic import (
+    AnyHttpUrl,
     BaseModel,
     ConfigDict,
     StrictBool,
@@ -146,13 +147,33 @@ class MasDelegatedAuth(BaseAuth):
 
     @property
     def _metadata_url(self) -> str:
-        return (
-            f"{str(self._config.endpoint).rstrip('/')}/.well-known/openid-configuration"
+        return str(
+            AnyHttpUrl.build(
+                scheme=self._config.endpoint.scheme,
+                username=self._config.endpoint.username,
+                password=self._config.endpoint.password,
+                host=self._config.endpoint.host or "",
+                port=self._config.endpoint.port,
+                path=".well-known/openid-configuration",
+                query=None,
+                fragment=None,
+            )
         )
 
     @property
     def _introspection_endpoint(self) -> str:
-        return f"{str(self._config.endpoint).rstrip('/')}/oauth2/introspect"
+        return str(
+            AnyHttpUrl.build(
+                scheme=self._config.endpoint.scheme,
+                username=self._config.endpoint.username,
+                password=self._config.endpoint.password,
+                host=self._config.endpoint.host or "",
+                port=self._config.endpoint.port,
+                path="oauth2/introspect",
+                query=None,
+                fragment=None,
+            )
+        )
 
     async def _load_metadata(self) -> ServerMetadata:
         response = await self._http_client.get_json(self._metadata_url)

synapse/api/constants.py

@@ -29,19 +29,6 @@ from typing import Final
 # the max size of a (canonical-json-encoded) event
 MAX_PDU_SIZE = 65536
 
-# The maximum allowed size of an HTTP request.
-# Other than media uploads, the biggest request we expect to see is a fully-loaded
-# /federation/v1/send request.
-#
-# The main thing in such a request is up to 50 PDUs, and up to 100 EDUs. PDUs are
-# limited to 65536 bytes (possibly slightly more if the sender didn't use canonical
-# json encoding); there is no specced limit to EDUs (see
-# https://github.com/matrix-org/matrix-doc/issues/3121).
-#
-# in short, we somewhat arbitrarily limit requests to 200 * 64K (about 12.5M)
-#
-MAX_REQUEST_SIZE = 200 * MAX_PDU_SIZE
-
 # Max/min size of ints in canonical JSON
 CANONICALJSON_MAX_INT = (2**53) - 1
 CANONICALJSON_MIN_INT = -CANONICALJSON_MAX_INT
@@ -285,6 +272,9 @@ class EventContentFields:
     M_TOPIC: Final = "m.topic"
     M_TEXT: Final = "m.text"
 
+    # Event relations
+    RELATIONS: Final = "m.relates_to"
+
 
 class EventUnsignedContentFields:
     """Fields found inside the 'unsigned' data on events"""
@@ -320,10 +310,6 @@ class AccountDataTypes:
     MSC4155_INVITE_PERMISSION_CONFIG: Final = (
         "org.matrix.msc4155.invite_permission_config"
     )
-    # MSC4380: Invite blocking
-    MSC4380_INVITE_PERMISSION_CONFIG: Final = (
-        "org.matrix.msc4380.invite_permission_config"
-    )
     # Synapse-specific behaviour. See "Client-Server API Extensions" documentation
     # in Admin API for more information.
     SYNAPSE_ADMIN_CLIENT_CONFIG: Final = "io.element.synapse.admin_client_config"
@@ -377,3 +363,10 @@ class Direction(enum.Enum):
 class ProfileFields:
     DISPLAYNAME: Final = "displayname"
     AVATAR_URL: Final = "avatar_url"
+
+
+class MRelatesToFields:
+    """Fields found inside m.relates_to content blocks."""
+
+    EVENT_ID: Final = "event_id"
+    REL_TYPE: Final = "rel_type"

synapse/api/errors.py

@@ -137,7 +137,7 @@ class Codes(str, Enum):
     PROFILE_TOO_LARGE = "M_PROFILE_TOO_LARGE"
     KEY_TOO_LARGE = "M_KEY_TOO_LARGE"
 
-    # Part of MSC4155/MSC4380
+    # Part of MSC4155
     INVITE_BLOCKED = "ORG.MATRIX.MSC4155.M_INVITE_BLOCKED"
 
     # Part of MSC4190
@@ -856,12 +856,6 @@ class HttpResponseException(CodeMessageException):
         return ProxiedRequestError(self.code, errmsg, errcode, j)
 
 
-class HomeServerNotSetupException(Exception):
-    """
-    Raised when an operation is attempted on the HomeServer before setup() has been called.
-    """
-
-
 class ShadowBanError(Exception):
     """
     Raised when a shadow-banned user attempts to perform an action.

synapse/api/ratelimiting.py

@@ -27,7 +27,6 @@ from synapse.config.ratelimiting import RatelimitSettings
 from synapse.storage.databases.main import DataStore
 from synapse.types import Requester
 from synapse.util.clock import Clock
-from synapse.util.duration import Duration
 from synapse.util.wheel_timer import WheelTimer
 
 if TYPE_CHECKING:
@@ -101,7 +100,7 @@ class Ratelimiter:
         # and doesn't affect correctness.
         self._timer: WheelTimer[Hashable] = WheelTimer()
 
-        self.clock.looping_call(self._prune_message_counts, Duration(seconds=15))
+        self.clock.looping_call(self._prune_message_counts, 15 * 1000)
 
     def _get_key(self, requester: Requester | None, key: Hashable | None) -> Hashable:
         """Use the requester's MXID as a fallback key if no key is provided."""

synapse/app/_base.py

@@ -36,13 +36,12 @@ from typing import (
     Awaitable,
     Callable,
     NoReturn,
-    Optional,
     cast,
 )
 from wsgiref.simple_server import WSGIServer
 
 from cryptography.utils import CryptographyDeprecationWarning
-from typing_extensions import ParamSpec, assert_never
+from typing_extensions import ParamSpec
 
 import twisted
 from twisted.internet import defer, error, reactor as _reactor
@@ -60,17 +59,12 @@ from twisted.python.threadpool import ThreadPool
 from twisted.web.resource import Resource
 
 import synapse.util.caches
-from synapse.api.constants import MAX_REQUEST_SIZE
+from synapse.api.constants import MAX_PDU_SIZE
 from synapse.app import check_bind_error
 from synapse.config import ConfigError
 from synapse.config._base import format_config_error
 from synapse.config.homeserver import HomeServerConfig
-from synapse.config.server import (
-    ListenerConfig,
-    ManholeConfig,
-    TCPListenerConfig,
-    UnixListenerConfig,
-)
+from synapse.config.server import ListenerConfig, ManholeConfig, TCPListenerConfig
 from synapse.crypto import context_factory
 from synapse.events.auto_accept_invites import InviteAutoAccepter
 from synapse.events.presence_router import load_legacy_presence_router
@@ -419,44 +413,13 @@ def listen_unix(
     ]
 
 
-class ListenerException(RuntimeError):
-    """
-    An exception raised when we fail to listen with the given `ListenerConfig`.
-
-    Attributes:
-        listener_config: The listener config that caused the exception.
-    """
-
-    def __init__(
-        self,
-        listener_config: ListenerConfig,
-    ):
-        listener_human_name = ""
-        port = ""
-        if isinstance(listener_config, TCPListenerConfig):
-            listener_human_name = "TCP port"
-            port = str(listener_config.port)
-        elif isinstance(listener_config, UnixListenerConfig):
-            listener_human_name = "unix socket"
-            port = listener_config.path
-        else:
-            assert_never(listener_config)
-
-        super().__init__(
-            "Failed to listen on %s (%s) with the given listener config: %s"
-            % (listener_human_name, port, listener_config)
-        )
-
-        self.listener_config = listener_config
-
-
 def listen_http(
     hs: "HomeServer",
     listener_config: ListenerConfig,
     root_resource: Resource,
     version_string: str,
     max_request_body_size: int,
-    context_factory: Optional[IOpenSSLContextFactory],
+    context_factory: IOpenSSLContextFactory | None,
     reactor: ISynapseReactor = reactor,
 ) -> list[Port]:
     """
@@ -484,55 +447,39 @@ def listen_http(
         hs=hs,
     )
 
-    try:
-        if isinstance(listener_config, TCPListenerConfig):
-            if listener_config.is_tls():
-                # refresh_certificate should have been called before this.
-                assert context_factory is not None
-                ports = listen_ssl(
-                    listener_config.bind_addresses,
-                    listener_config.port,
-                    site,
-                    context_factory,
-                    reactor=reactor,
-                )
-                logger.info(
-                    "Synapse now listening on TCP port %d (TLS)", listener_config.port
-                )
-            else:
-                ports = listen_tcp(
-                    listener_config.bind_addresses,
-                    listener_config.port,
-                    site,
-                    reactor=reactor,
-                )
-                logger.info(
-                    "Synapse now listening on TCP port %d", listener_config.port
-                )
-
-        elif isinstance(listener_config, UnixListenerConfig):
-            ports = listen_unix(
-                listener_config.path, listener_config.mode, site, reactor=reactor
+    if isinstance(listener_config, TCPListenerConfig):
+        if listener_config.is_tls():
+            # refresh_certificate should have been called before this.
+            assert context_factory is not None
+            ports = listen_ssl(
+                listener_config.bind_addresses,
+                listener_config.port,
+                site,
+                context_factory,
+                reactor=reactor,
             )
-            # getHost() returns a UNIXAddress which contains an instance variable of 'name'
-            # encoded as a byte string. Decode as utf-8 so pretty.
             logger.info(
-                "Synapse now listening on Unix Socket at: %s",
-                ports[0].getHost().name.decode("utf-8"),
+                "Synapse now listening on TCP port %d (TLS)", listener_config.port
             )
         else:
-            assert_never(listener_config)
-    except Exception as exc:
-        # The Twisted interface says that "Users should not call this function
-        # themselves!" but this appears to be the correct/only way handle proper cleanup
-        # of the site when things go wrong. In the normal case, a `Port` is created
-        # which we can call `Port.stopListening()` on to do the same thing (but no
-        # `Port` is created when an error occurs).
-        #
-        # We use `site.stopFactory()` instead of `site.doStop()` as the latter assumes
-        # that `site.doStart()` was called (which won't be the case if an error occurs).
-        site.stopFactory()
-        raise ListenerException(listener_config) from exc
+            ports = listen_tcp(
+                listener_config.bind_addresses,
+                listener_config.port,
+                site,
+                reactor=reactor,
+            )
+            logger.info("Synapse now listening on TCP port %d", listener_config.port)
+
+    else:
+        ports = listen_unix(
+            listener_config.path, listener_config.mode, site, reactor=reactor
+        )
+        # getHost() returns a UNIXAddress which contains an instance variable of 'name'
+        # encoded as a byte string. Decode as utf-8 so pretty.
+        logger.info(
+            "Synapse now listening on Unix Socket at: %s",
+            ports[0].getHost().name.decode("utf-8"),
+        )
 
     return ports
 
@@ -896,8 +843,17 @@ def sdnotify(state: bytes) -> None:
 def max_request_body_size(config: HomeServerConfig) -> int:
     """Get a suitable maximum size for incoming HTTP requests"""
 
-    # Baseline default for any request that isn't configured in the homeserver config
-    max_request_size = MAX_REQUEST_SIZE
+    # Other than media uploads, the biggest request we expect to see is a fully-loaded
+    # /federation/v1/send request.
+    #
+    # The main thing in such a request is up to 50 PDUs, and up to 100 EDUs. PDUs are
+    # limited to 65536 bytes (possibly slightly more if the sender didn't use canonical
+    # json encoding); there is no specced limit to EDUs (see
+    # https://github.com/matrix-org/matrix-doc/issues/3121).
+    #
+    # in short, we somewhat arbitrarily limit requests to 200 * 64K (about 12.5M)
+    #
+    max_request_size = 200 * MAX_PDU_SIZE
 
     # if we have a media repo enabled, we may need to allow larger uploads than that
     if config.media.can_load_media_repo:

synapse/app/admin_cmd.py

@@ -24,7 +24,7 @@ import logging
 import os
 import sys
 import tempfile
-from typing import Mapping, Optional, Sequence
+from typing import Mapping, Sequence
 
 from twisted.internet import defer, task
 
@@ -291,7 +291,7 @@ def load_config(argv_options: list[str]) -> tuple[HomeServerConfig, argparse.Nam
 
 def create_homeserver(
     config: HomeServerConfig,
-    reactor: Optional[ISynapseReactor] = None,
+    reactor: ISynapseReactor | None = None,
 ) -> AdminCmdServer:
     """
     Create a homeserver instance for the Synapse admin command process.

synapse/app/generic_worker.py

@@ -21,7 +21,6 @@
 #
 import logging
 import sys
-from typing import Optional
 
 from twisted.web.resource import Resource
 
@@ -336,7 +335,7 @@ def load_config(argv_options: list[str]) -> HomeServerConfig:
 
 def create_homeserver(
     config: HomeServerConfig,
-    reactor: Optional[ISynapseReactor] = None,
+    reactor: ISynapseReactor | None = None,
 ) -> GenericWorkerServer:
     """
     Create a homeserver instance for the Synapse worker process.

synapse/app/homeserver.py

@@ -22,7 +22,7 @@
 import logging
 import os
 import sys
-from typing import Iterable, Optional
+from typing import Iterable
 
 from twisted.internet.tcp import Port
 from twisted.web.resource import EncodingResourceWrapper, Resource
@@ -350,7 +350,7 @@ def load_or_generate_config(argv_options: list[str]) -> HomeServerConfig:
 
 def create_homeserver(
     config: HomeServerConfig,
-    reactor: Optional[ISynapseReactor] = None,
+    reactor: ISynapseReactor | None = None,
 ) -> SynapseHomeServer:
     """
     Create a homeserver instance for the Synapse main process.
@@ -450,8 +450,7 @@ async def start(
     await _base.start(hs, freeze=freeze)
 
     # TODO: Feels like this should be moved somewhere else.
-    for db in hs.get_datastores().databases:
-        db.updates.start_doing_background_updates()
+    hs.get_datastores().main.db_pool.updates.start_doing_background_updates()
 
 
 def start_reactor(

synapse/app/phone_stats_home.py

@@ -30,20 +30,24 @@ from twisted.internet import defer
 
 from synapse.metrics import SERVER_NAME_LABEL
 from synapse.types import JsonDict
-from synapse.util.duration import Duration
+from synapse.util.constants import (
+    MILLISECONDS_PER_SECOND,
+    ONE_HOUR_SECONDS,
+    ONE_MINUTE_SECONDS,
+)
 
 if TYPE_CHECKING:
     from synapse.server import HomeServer
 
 logger = logging.getLogger("synapse.app.homeserver")
 
-INITIAL_DELAY_BEFORE_FIRST_PHONE_HOME = Duration(minutes=5)
+INITIAL_DELAY_BEFORE_FIRST_PHONE_HOME_SECONDS = 5 * ONE_MINUTE_SECONDS
 """
 We wait 5 minutes to send the first set of stats as the server can be quite busy the
 first few minutes
 """
 
-PHONE_HOME_INTERVAL = Duration(hours=3)
+PHONE_HOME_INTERVAL_SECONDS = 3 * ONE_HOUR_SECONDS
 """
 Phone home stats are sent every 3 hours
 """
@@ -218,13 +222,13 @@ def start_phone_stats_home(hs: "HomeServer") -> None:
     # table will decrease
     clock.looping_call(
         hs.get_datastores().main.generate_user_daily_visits,
-        Duration(minutes=5),
+        5 * ONE_MINUTE_SECONDS * MILLISECONDS_PER_SECOND,
     )
 
     # monthly active user limiting functionality
     clock.looping_call(
         hs.get_datastores().main.reap_monthly_active_users,
-        Duration(hours=1),
+        ONE_HOUR_SECONDS * MILLISECONDS_PER_SECOND,
     )
     hs.get_datastores().main.reap_monthly_active_users()
 
@@ -263,14 +267,14 @@ def start_phone_stats_home(hs: "HomeServer") -> None:
 
     if hs.config.server.limit_usage_by_mau or hs.config.server.mau_stats_only:
         generate_monthly_active_users()
-        clock.looping_call(generate_monthly_active_users, Duration(minutes=5))
+        clock.looping_call(generate_monthly_active_users, 5 * 60 * 1000)
     # End of monthly active user settings
 
     if hs.config.metrics.report_stats:
         logger.info("Scheduling stats reporting for 3 hour intervals")
         clock.looping_call(
             phone_stats_home,
-            PHONE_HOME_INTERVAL,
+            PHONE_HOME_INTERVAL_SECONDS * MILLISECONDS_PER_SECOND,
             hs,
             stats,
         )
@@ -278,14 +282,14 @@ def start_phone_stats_home(hs: "HomeServer") -> None:
         # We need to defer this init for the cases that we daemonize
         # otherwise the process ID we get is that of the non-daemon process
         clock.call_later(
-            Duration(seconds=0),
+            0,
             performance_stats_init,
         )
 
         # We wait 5 minutes to send the first set of stats as the server can
         # be quite busy the first few minutes
         clock.call_later(
-            INITIAL_DELAY_BEFORE_FIRST_PHONE_HOME,
+            INITIAL_DELAY_BEFORE_FIRST_PHONE_HOME_SECONDS,
             phone_stats_home,
             hs,
             stats,

synapse/appservice/scheduler.py

@@ -65,6 +65,8 @@ from typing import (
     Sequence,
 )
 
+from twisted.internet.interfaces import IDelayedCall
+
 from synapse.appservice import (
     ApplicationService,
     ApplicationServiceState,
@@ -76,8 +78,7 @@ from synapse.events import EventBase
 from synapse.logging.context import run_in_background
 from synapse.storage.databases.main import DataStore
 from synapse.types import DeviceListUpdates, JsonMapping
-from synapse.util.clock import Clock, DelayedCallWrapper
-from synapse.util.duration import Duration
+from synapse.util.clock import Clock
 
 if TYPE_CHECKING:
     from synapse.server import HomeServer
@@ -502,11 +503,11 @@ class _Recoverer:
         self.service = service
         self.callback = callback
         self.backoff_counter = 1
-        self.scheduled_recovery: DelayedCallWrapper | None = None
+        self.scheduled_recovery: IDelayedCall | None = None
 
     def recover(self) -> None:
-        delay = Duration(seconds=2**self.backoff_counter)
-        logger.info("Scheduling retries on %s in %fs", self.service.id, delay.as_secs())
+        delay = 2**self.backoff_counter
+        logger.info("Scheduling retries on %s in %fs", self.service.id, delay)
         self.scheduled_recovery = self.clock.call_later(
             delay,
             self.hs.run_as_background_process,

synapse/config/_base.py

@@ -672,8 +672,7 @@ class RootConfig:
             action="append",
             metavar="CONFIG_FILE",
             help="Specify config file. Can be given multiple times and"
-            " may specify directories containing *.yaml files."
-            " Top-level keys in later files overwrite ones in earlier files.",
+            " may specify directories containing *.yaml files.",
         )
         parser.add_argument(
             "--no-secrets-in-config",

synapse/config/experimental.py

@@ -3,7 +3,6 @@
 #
 # Copyright 2021 The Matrix.org Foundation C.I.C.
 # Copyright (C) 2023 New Vector, Ltd
-# Copyright (C) 2025 Element Creations Ltd
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
@@ -439,9 +438,6 @@ class ExperimentalConfig(Config):
         # previously calculated push actions.
         self.msc2654_enabled: bool = experimental.get("msc2654_enabled", False)
 
-        # MSC2666: Query mutual rooms between two users.
-        self.msc2666_enabled: bool = experimental.get("msc2666_enabled", False)
-
         # MSC2815 (allow room moderators to view redacted event content)
         self.msc2815_enabled: bool = experimental.get("msc2815_enabled", False)
 
@@ -534,9 +530,6 @@ class ExperimentalConfig(Config):
             "msc4108_delegation_endpoint", None
         )
 
-        # MSC4370: Get extremities federation endpoint
-        self.msc4370_enabled = experimental.get("msc4370_enabled", False)
-
         auth_delegated = self.msc3861.enabled or (
             config.get("matrix_authentication_service") or {}
         ).get("enabled", False)
@@ -601,5 +594,5 @@ class ExperimentalConfig(Config):
         # (and MSC4308: Thread Subscriptions extension to Sliding Sync)
         self.msc4306_enabled: bool = experimental.get("msc4306_enabled", False)
 
-        # MSC4380: Invite blocking
-        self.msc4380_enabled: bool = experimental.get("msc4380_enabled", False)
+        # MSC4360: Threads Extension to Sliding Sync
+        self.msc4360_enabled: bool = experimental.get("msc4360_enabled", False)

synapse/crypto/keyring.py

@@ -21,7 +21,6 @@
 
 import abc
 import logging
-from contextlib import ExitStack
 from typing import TYPE_CHECKING, Callable, Iterable
 
 import attr
@@ -151,81 +150,57 @@ class Keyring:
     """
 
     def __init__(
-        self,
-        hs: "HomeServer",
-        test_only_key_fetchers: "list[KeyFetcher] | None" = None,
+        self, hs: "HomeServer", key_fetchers: "Iterable[KeyFetcher] | None" = None
     ):
-        """
-        Args:
-            hs: The HomeServer instance
-            test_only_key_fetchers: Dependency injection for tests only. If provided,
-                these key fetchers will be used instead of the default ones.
-        """
-        # Clean-up to avoid partial initialization leaving behind references.
-        with ExitStack() as exit:
-            self.server_name = hs.hostname
+        self.server_name = hs.hostname
 
-            self._key_fetchers: list[KeyFetcher] = []
-            if test_only_key_fetchers is None:
-                # Always fetch keys from the database.
-                store_key_fetcher = StoreKeyFetcher(hs)
-                exit.callback(store_key_fetcher.shutdown)
-                self._key_fetchers.append(store_key_fetcher)
+        if key_fetchers is None:
+            # Always fetch keys from the database.
+            mutable_key_fetchers: list[KeyFetcher] = [StoreKeyFetcher(hs)]
+            # Fetch keys from configured trusted key servers, if any exist.
+            key_servers = hs.config.key.key_servers
+            if key_servers:
+                mutable_key_fetchers.append(PerspectivesKeyFetcher(hs))
+            # Finally, fetch keys from the origin server directly.
+            mutable_key_fetchers.append(ServerKeyFetcher(hs))
 
-                # Fetch keys from configured trusted key servers, if any exist.
-                key_servers = hs.config.key.key_servers
-                if key_servers:
-                    perspectives_key_fetcher = PerspectivesKeyFetcher(hs)
-                    exit.callback(perspectives_key_fetcher.shutdown)
-                    self._key_fetchers.append(perspectives_key_fetcher)
+            self._key_fetchers: Iterable[KeyFetcher] = tuple(mutable_key_fetchers)
+        else:
+            self._key_fetchers = key_fetchers
 
-                # Finally, fetch keys from the origin server directly.
-                server_key_fetcher = ServerKeyFetcher(hs)
-                exit.callback(server_key_fetcher.shutdown)
-                self._key_fetchers.append(server_key_fetcher)
-            else:
-                self._key_fetchers = test_only_key_fetchers
+        self._fetch_keys_queue: BatchingQueue[
+            _FetchKeyRequest, dict[str, dict[str, FetchKeyResult]]
+        ] = BatchingQueue(
+            name="keyring_server",
+            hs=hs,
+            clock=hs.get_clock(),
+            # The method called to fetch each key
+            process_batch_callback=self._inner_fetch_key_requests,
+        )
 
-            self._fetch_keys_queue: BatchingQueue[
-                _FetchKeyRequest, dict[str, dict[str, FetchKeyResult]]
-            ] = BatchingQueue(
-                name="keyring_server",
-                hs=hs,
-                clock=hs.get_clock(),
-                # The method called to fetch each key
-                process_batch_callback=self._inner_fetch_key_requests,
-            )
-            exit.callback(self._fetch_keys_queue.shutdown)
+        self._is_mine_server_name = hs.is_mine_server_name
 
-            self._is_mine_server_name = hs.is_mine_server_name
-
-            # build a FetchKeyResult for each of our own keys, to shortcircuit the
-            # fetcher.
-            self._local_verify_keys: dict[str, FetchKeyResult] = {}
-            for key_id, key in hs.config.key.old_signing_keys.items():
-                self._local_verify_keys[key_id] = FetchKeyResult(
-                    verify_key=key, valid_until_ts=key.expired
-                )
-
-            vk = get_verify_key(hs.signing_key)
-            self._local_verify_keys[f"{vk.alg}:{vk.version}"] = FetchKeyResult(
-                verify_key=vk,
-                valid_until_ts=2**63,  # fake future timestamp
+        # build a FetchKeyResult for each of our own keys, to shortcircuit the
+        # fetcher.
+        self._local_verify_keys: dict[str, FetchKeyResult] = {}
+        for key_id, key in hs.config.key.old_signing_keys.items():
+            self._local_verify_keys[key_id] = FetchKeyResult(
+                verify_key=key, valid_until_ts=key.expired
             )
 
-            # We reached the end of the block which means everything was successful, so
-            # no exit handlers are needed (remove them all).
-            exit.pop_all()
+        vk = get_verify_key(hs.signing_key)
+        self._local_verify_keys[f"{vk.alg}:{vk.version}"] = FetchKeyResult(
+            verify_key=vk,
+            valid_until_ts=2**63,  # fake future timestamp
+        )
 
     def shutdown(self) -> None:
         """
         Prepares the KeyRing for garbage collection by shutting down it's queues.
         """
         self._fetch_keys_queue.shutdown()
-
         for key_fetcher in self._key_fetchers:
             key_fetcher.shutdown()
-        self._key_fetchers.clear()
 
     async def verify_json_for_server(
         self,
@@ -546,21 +521,9 @@ class StoreKeyFetcher(KeyFetcher):
     """KeyFetcher impl which fetches keys from our data store"""
 
     def __init__(self, hs: "HomeServer"):
-        # Clean-up to avoid partial initialization leaving behind references.
-        with ExitStack() as exit:
-            super().__init__(hs)
-            # `KeyFetcher` keeps a reference to `hs` which we need to clean up if
-            # something goes wrong so we can cleanly shutdown the homeserver.
-            exit.callback(super().shutdown)
+        super().__init__(hs)
 
-            # An error can be raised here if someone tried to create a `StoreKeyFetcher`
-            # before the homeserver is fully set up (`HomeServerNotSetupException:
-            # HomeServer.setup must be called before getting datastores`).
-            self.store = hs.get_datastores().main
-
-            # We reached the end of the block which means everything was successful, so
-            # no exit handlers are needed (remove them all).
-            exit.pop_all()
+        self.store = hs.get_datastores().main
 
     async def _fetch_keys(
         self, keys_to_fetch: list[_FetchKeyRequest]
@@ -580,21 +543,9 @@ class StoreKeyFetcher(KeyFetcher):
 
 class BaseV2KeyFetcher(KeyFetcher):
     def __init__(self, hs: "HomeServer"):
-        # Clean-up to avoid partial initialization leaving behind references.
-        with ExitStack() as exit:
-            super().__init__(hs)
-            # `KeyFetcher` keeps a reference to `hs` which we need to clean up if
-            # something goes wrong so we can cleanly shutdown the homeserver.
-            exit.callback(super().shutdown)
+        super().__init__(hs)
 
-            # An error can be raised here if someone tried to create a `StoreKeyFetcher`
-            # before the homeserver is fully set up (`HomeServerNotSetupException:
-            # HomeServer.setup must be called before getting datastores`).
-            self.store = hs.get_datastores().main
-
-            # We reached the end of the block which means everything was successful, so
-            # no exit handlers are needed (remove them all).
-            exit.pop_all()
+        self.store = hs.get_datastores().main
 
     async def process_v2_response(
         self, from_server: str, response_json: JsonDict, time_added_ms: int

synapse/events/__init__.py

@@ -548,7 +548,7 @@ class FrozenEventV4(FrozenEventV3):
         assert create_event_id not in self._dict["auth_events"]
         if self.type == EventTypes.Create and self.get_state_key() == "":
             return self._dict["auth_events"]  # should be []
-        return [*self._dict["auth_events"], create_event_id]
+        return self._dict["auth_events"] + [create_event_id]
 
 
 def _event_type_from_format_version(

synapse/federation/federation_client.py

@@ -75,7 +75,6 @@ from synapse.types import JsonDict, StrCollection, UserID, get_domain_from_id
 from synapse.types.handlers.policy_server import RECOMMENDATION_OK, RECOMMENDATION_SPAM
 from synapse.util.async_helpers import concurrently_execute
 from synapse.util.caches.expiringcache import ExpiringCache
-from synapse.util.duration import Duration
 from synapse.util.retryutils import NotRetryingDestination
 
 if TYPE_CHECKING:
@@ -133,7 +132,7 @@ class FederationClient(FederationBase):
         super().__init__(hs)
 
         self.pdu_destination_tried: dict[str, dict[str, int]] = {}
-        self._clock.looping_call(self._clear_tried_cache, Duration(minutes=1))
+        self._clock.looping_call(self._clear_tried_cache, 60 * 1000)
         self.state = hs.get_state_handler()
         self.transport_layer = hs.get_federation_transport_client()
 

synapse/federation/federation_server.py

@@ -4,7 +4,6 @@
 # Copyright 2019-2021 Matrix.org Federation C.I.C
 # Copyright 2015, 2016 OpenMarket Ltd
 # Copyright (C) 2023 New Vector, Ltd
-# Copyright (C) 2025 Element Creations Ltd
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
@@ -90,7 +89,6 @@ from synapse.types import JsonDict, StateMap, UserID, get_domain_from_id
 from synapse.util import unwrapFirstError
 from synapse.util.async_helpers import Linearizer, concurrently_execute, gather_results
 from synapse.util.caches.response_cache import ResponseCache
-from synapse.util.duration import Duration
 from synapse.util.stringutils import parse_server_name
 
 if TYPE_CHECKING:
@@ -228,7 +226,7 @@ class FederationServer(FederationBase):
                 )
 
             # We pause a bit so that we don't start handling all rooms at once.
-            await self._clock.sleep(Duration(seconds=random.uniform(0, 0.1)))
+            await self._clock.sleep(random.uniform(0, 0.1))
 
     async def on_backfill_request(
         self, origin: str, room_id: str, versions: list[str], limit: int
@@ -303,9 +301,7 @@ class FederationServer(FederationBase):
             # Start a periodic check for old staged events. This is to handle
             # the case where locks time out, e.g. if another process gets killed
             # without dropping its locks.
-            self._clock.looping_call(
-                self._handle_old_staged_events, Duration(minutes=1)
-            )
+            self._clock.looping_call(self._handle_old_staged_events, 60 * 1000)
 
         # keep this as early as possible to make the calculated origin ts as
         # accurate as possible.
@@ -684,16 +680,6 @@ class FederationServer(FederationBase):
         resp = await self.registry.on_query(query_type, args)
         return 200, resp
 
-    async def on_get_extremities_request(self, origin: str, room_id: str) -> JsonDict:
-        origin_host, _ = parse_server_name(origin)
-        await self.check_server_matches_acl(origin_host, room_id)
-
-        await self._event_auth_handler.assert_host_in_room(room_id, origin)
-
-        extremities = await self.store.get_forward_extremities_for_room(room_id)
-        prev_event_ids = [e[0] for e in extremities]
-        return {"prev_events": prev_event_ids}
-
     async def on_make_join_request(
         self, origin: str, room_id: str, user_id: str, supported_versions: list[str]
     ) -> dict[str, Any]:

synapse/federation/send_queue.py

@@ -53,7 +53,6 @@ from synapse.federation.sender import AbstractFederationSender, FederationSender
 from synapse.metrics import SERVER_NAME_LABEL, LaterGauge
 from synapse.replication.tcp.streams.federation import FederationStream
 from synapse.types import JsonDict, ReadReceipt, RoomStreamToken, StrCollection
-from synapse.util.duration import Duration
 from synapse.util.metrics import Measure
 
 from .units import Edu
@@ -138,7 +137,7 @@ class FederationRemoteSendQueue(AbstractFederationSender):
             assert isinstance(queue, Sized)
             register(queue_name, queue=queue)
 
-        self.clock.looping_call(self._clear_queue, Duration(seconds=30))
+        self.clock.looping_call(self._clear_queue, 30 * 1000)
 
     def shutdown(self) -> None:
         """Stops this federation sender instance from sending further transactions."""

synapse/federation/sender/__init__.py

@@ -174,7 +174,6 @@ from synapse.types import (
     get_domain_from_id,
 )
 from synapse.util.clock import Clock
-from synapse.util.duration import Duration
 from synapse.util.metrics import Measure
 from synapse.util.retryutils import filter_destinations_by_retry_limiter
 
@@ -219,12 +218,12 @@ transaction_queue_pending_edus_gauge = LaterGauge(
 # Please note that rate limiting still applies, so while the loop is
 # executed every X seconds the destinations may not be woken up because
 # they are being rate limited following previous attempt failures.
-WAKEUP_RETRY_PERIOD = Duration(minutes=1)
+WAKEUP_RETRY_PERIOD_SEC = 60
 
-# Time to wait in between waking up each destination, i.e. one destination
+# Time (in s) to wait in between waking up each destination, i.e. one destination
 # will be woken up every <x> seconds until we have woken every destination
 # has outstanding catch-up.
-WAKEUP_INTERVAL_BETWEEN_DESTINATIONS = Duration(seconds=5)
+WAKEUP_INTERVAL_BETWEEN_DESTINATIONS_SEC = 5
 
 
 class AbstractFederationSender(metaclass=abc.ABCMeta):
@@ -380,7 +379,7 @@ class _DestinationWakeupQueue:
 
                 queue.attempt_new_transaction()
 
-                await self.clock.sleep(Duration(seconds=current_sleep_seconds))
+                await self.clock.sleep(current_sleep_seconds)
 
                 if not self.queue:
                     break
@@ -469,7 +468,7 @@ class FederationSender(AbstractFederationSender):
         # Regularly wake up destinations that have outstanding PDUs to be caught up
         self.clock.looping_call_now(
             self.hs.run_as_background_process,
-            WAKEUP_RETRY_PERIOD,
+            WAKEUP_RETRY_PERIOD_SEC * 1000.0,
             "wake_destinations_needing_catchup",
             self._wake_destinations_needing_catchup,
         )
@@ -1162,4 +1161,4 @@ class FederationSender(AbstractFederationSender):
                     last_processed,
                 )
                 self.wake_destination(destination)
-                await self.clock.sleep(WAKEUP_INTERVAL_BETWEEN_DESTINATIONS)
+                await self.clock.sleep(WAKEUP_INTERVAL_BETWEEN_DESTINATIONS_SEC)

synapse/federation/sender/per_destination_queue.py

@@ -41,7 +41,6 @@ from synapse.events import EventBase
 from synapse.federation.units import Edu
 from synapse.handlers.presence import format_user_presence_state
 from synapse.logging import issue9533_logger
-from synapse.logging.context import PreserveLoggingContext
 from synapse.logging.opentracing import SynapseTags, set_tag
 from synapse.metrics import SERVER_NAME_LABEL, sent_transactions_counter
 from synapse.types import JsonDict, ReadReceipt
@@ -187,8 +186,7 @@ class PerDestinationQueue:
         self._transaction_manager.shutdown()
         try:
             if self.active_transmission_loop is not None:
-                with PreserveLoggingContext():
-                    self.active_transmission_loop.cancel()
+                self.active_transmission_loop.cancel()
         except Exception:
             pass
 

synapse/federation/transport/server/__init__.py

@@ -4,7 +4,6 @@
 # Copyright 2020 Sorunome
 # Copyright 2014-2021 The Matrix.org Foundation C.I.C.
 # Copyright (C) 2023 New Vector, Ltd
-# Copyright (C) 2025 Element Creations Ltd
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
@@ -34,7 +33,6 @@ from synapse.federation.transport.server.federation import (
     FederationMediaDownloadServlet,
     FederationMediaThumbnailServlet,
     FederationUnstableClientKeysClaimServlet,
-    FederationUnstableGetExtremitiesServlet,
 )
 from synapse.http.server import HttpServer, JsonResource
 from synapse.http.servlet import (
@@ -328,12 +326,6 @@ def register_servlets(
                 if not hs.config.media.can_load_media_repo:
                     continue
 
-            if (
-                servletclass == FederationUnstableGetExtremitiesServlet
-                and not hs.config.experimental.msc4370_enabled
-            ):
-                continue
-
             servletclass(
                 hs=hs,
                 authenticator=authenticator,

synapse/federation/transport/server/federation.py

@@ -1,9 +1,8 @@
 #
 # This file is licensed under the Affero General Public License (AGPL) version 3.
 #
-# Copyright 2021 The Matrix.org Foundation C.I.C.
+#  Copyright 2021 The Matrix.org Foundation C.I.C.
 # Copyright (C) 2023 New Vector, Ltd
-# Copyright (C) 2025 Element Creations Ltd
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
@@ -274,22 +273,6 @@ class FederationQueryServlet(BaseFederationServerServlet):
         return await self.handler.on_query_request(query_type, args)
 
 
-class FederationUnstableGetExtremitiesServlet(BaseFederationServerServlet):
-    PREFIX = FEDERATION_UNSTABLE_PREFIX + "/org.matrix.msc4370"
-    PATH = "/extremities/(?P<room_id>[^/]*)"
-    CATEGORY = "Federation requests"
-
-    async def on_GET(
-        self,
-        origin: str,
-        content: Literal[None],
-        query: dict[bytes, list[bytes]],
-        room_id: str,
-    ) -> tuple[int, JsonDict]:
-        result = await self.handler.on_get_extremities_request(origin, room_id)
-        return 200, result
-
-
 class FederationMakeJoinServlet(BaseFederationServerServlet):
     PATH = "/make_join/(?P<room_id>[^/]*)/(?P<user_id>[^/]*)"
     CATEGORY = "Federation requests"
@@ -901,7 +884,6 @@ FEDERATION_SERVLET_CLASSES: tuple[type[BaseFederationServlet], ...] = (
     FederationBackfillServlet,
     FederationTimestampLookupServlet,
     FederationQueryServlet,
-    FederationUnstableGetExtremitiesServlet,
     FederationMakeJoinServlet,
     FederationMakeLeaveServlet,
     FederationEventServlet,

synapse/handlers/account_validity.py

@@ -28,7 +28,6 @@ from synapse.metrics.background_process_metrics import wrap_as_background_proces
 from synapse.types import UserID
 from synapse.util import stringutils
 from synapse.util.async_helpers import delay_cancellation
-from synapse.util.duration import Duration
 
 if TYPE_CHECKING:
     from synapse.server import HomeServer
@@ -74,7 +73,7 @@ class AccountValidityHandler:
 
             # Check the renewal emails to send and send them every 30min.
             if hs.config.worker.run_background_tasks:
-                self.clock.looping_call(self._send_renewal_emails, Duration(minutes=30))
+                self.clock.looping_call(self._send_renewal_emails, 30 * 60 * 1000)
 
     async def is_user_expired(self, user_id: str) -> bool:
         """Checks if a user has expired against third-party modules.