build_rust.py

 # A build script for poetry that adds the rust extension.
 
+import itertools
 import os
 from typing import Any, Dict
 
+from packaging.specifiers import SpecifierSet
 from setuptools_rust import Binding, RustExtension
 
 
@@ -14,6 +16,8 @@ def build(setup_kwargs: Dict[str, Any]) -> None:
         target="synapse.synapse_rust",
         path=cargo_toml_path,
         binding=Binding.PyO3,
+        # This flag is a no-op in the latest versions. Instead, we need to
+        # specify this in the `bdist_wheel` config below.
         py_limited_api=True,
         # We force always building in release mode, as we can't tell the
         # difference between using `poetry` in development vs production.
@@ -21,3 +25,18 @@ def build(setup_kwargs: Dict[str, Any]) -> None:
     )
     setup_kwargs.setdefault("rust_extensions", []).append(extension)
     setup_kwargs["zip_safe"] = False
+
+    # We lookup the minimum supported python version by looking at
+    # `python_requires` (e.g. ">=3.9.0,<4.0.0") and finding the first python
+    # version that matches. We then convert that into the `py_limited_api` form,
+    # e.g. cp39 for python 3.9.
+    py_limited_api: str
+    python_bounds = SpecifierSet(setup_kwargs["python_requires"])
+    for minor_version in itertools.count(start=8):
+        if f"3.{minor_version}.0" in python_bounds:
+            py_limited_api = f"cp3{minor_version}"
+            break
+
+    setup_kwargs.setdefault("options", {}).setdefault("bdist_wheel", {})[
+        "py_limited_api"
+    ] = py_limited_api

changelog.d/15025.misc

-Use oEmbed to generate URL previews for YouTube Shorts.

changelog.d/15224.feature

-Add `forget_rooms_on_leave` config option to automatically forget rooms when users leave them or are removed from them.

changelog.d/15437.misc

-Make the `thread_id` column on `event_push_actions`, `event_push_actions_staging`, and `event_push_summary` non-null.

changelog.d/15509.misc

-Bump pyicu from 2.10.2 to 2.11.

changelog.d/15516.feature

-Add a config option to delay push notifications by a random amount, to discourage time-based profiling.

changelog.d/15522.misc

-Remove references to supporting per-user flag for [MSC2654](https://github.com/matrix-org/matrix-spec-proposals/pull/2654) (#15522).

changelog.d/15523.bugfix

-Don't fail on federation over TOR where SRV queries are not supported. Contributed by Zdzichu.

changelog.d/15527.misc

-Don't use a trusted key server when running the demo scripts.
\ No newline at end of file

changelog.d/15529.misc

-Speed up rebuilding of the user directory for local users.

changelog.d/15531.misc

-Speed up deleting of old rows in `event_push_actions`.

changelog.d/15532.misc

-Install the `xmlsec` and `mdbook` packages and switch back to the upstream [cachix/devenv](https://github.com/cachix/devenv) repo in the nix development environment.

changelog.d/15533.misc

-Install the `xmlsec` and `mdbook` packages and switch back to the upstream [cachix/devenv](https://github.com/cachix/devenv) repo in the nix development environment.

changelog.d/15534.misc

-Implement [MSC3987](https://github.com/matrix-org/matrix-spec-proposals/pull/3987) by removing `"dont_notify"` from the list of actions in default push rules.

changelog.d/15535.misc

-Move various module API callback registration methods to a dedicated class.
\ No newline at end of file

changelog.d/15536.feature

-Implement [MSC4009](https://github.com/matrix-org/matrix-spec-proposals/pull/4009) to expand the supported characters in Matrix IDs.

changelog.d/15539.misc

-Proxy `/user/devices` federation queries to application services for [MSC3984](https://github.com/matrix-org/matrix-spec-proposals/pull/3984).

changelog.d/15542.misc

-Factor out an `is_mine_server_name` method.

changelog.d/15543.misc

-Allow running Complement tests using [podman](https://podman.io/) by adding a `PODMAN` environment variable to `scripts-dev/complement.sh`.
\ No newline at end of file

changelog.d/15544.doc

-Clarify documentation of the "Create or modify account" Admin API.
\ No newline at end of file