rust-analyzer LSP server disables auto-save of Rust files

[srackham]

Summary

Disabling the Rust LSP server restores the Helix auto-save behaviour.

Leaving the LSP enabled and disablingauto-format also restores the auto-save behaviour.

rustc 1.82.0, helix 24.7, NixOS 24.05.

See also: #10928, #11237

Reproduction Steps

I tried this:

1. Edit Rust file
2. Wait for it to auto-save

I expected this to happen: the file auto-saves after auto-save delay

Instead, this happened: the file did not auto-save

Helix log

~/.cache/helix/helix.log

please provide a copy of `~/.cache/helix/helix.log` here if possible, you may need to redact some of the lines

Platform

Linux: NixOS 24.05

Terminal Emulator

alacritty 0.13.2 running tmux 3.4

Installation Method

Nix package

Helix Version

helix 24.7 (079f544)