Erik JohnstonandClaude Opus 5.5 00d382940d Port the required state derivation and changes to Rust ...

`rust/src/sliding_sync/required_state.rs` holds `_required_state_changes`
and the derivation in `get_room_sync_data` of the state filter and the
member sets from a room's `required_state` and timeline. The Python
derivation moves, unchanged, into two module-level helpers,
`_required_state_request` and `_state_filter_with_meta`, so the
differential tests can call it.

Python's results depend on set iteration order in three places, and Rust
takes one of Python's possible outcomes in each:

- The previous state keys kept over the 100-key cap: Python slices a
  set, Rust takes the first in sorted order.
- Converting explicit members to lazy ones reads a loop variable that
  leaked out of the loops before it. Without state deltas, Python's is
  the last type of a set union in hash order, so whether those members
  join the lazy cache varies between processes. Rust reads
  `m.room.member`'s.
- `must_await_full_state` raises on an empty state key under the `*`
  type, unless a remote user ID comes first in the set. Rust checks the
  user IDs first.

The tests compare over 3000 generated inputs each, and allow exactly
these differences.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01L51DoxB8VnH8UjXJFDgpNG

2026-10-16 11:26:25 +00:00

..

benches

Add push rules for MSC4075: MatrixRTC invites and notifications (#20227)

2026-09-25 10:40:24 +00:00

src

Port the required state derivation and changes to Rust

2026-10-16 11:26:25 +00:00

build.rs

resolves #19403 Report the rust compiler version used in the prometheus metrics (#19643)

2026-04-03 11:21:23 +02:00

Cargo.toml

Add a Rust federation agent

2026-10-15 14:54:15 +00:00

clippy.toml

Move per-homeserver Rust state into a RustRuntime object on the HomeServer (#20011)

2026-09-21 18:48:37 +01:00