Problem

There's currently no way to install pytest-language-server through the Nix ecosystem. The package isn't in nixpkgs, and the repo doesn't have a flake.nix, so Nix users can't consume it as a flake input either.

I wrote a buildRustPackage derivation locally and it builds fine, but two tests fail inside the Nix build sandbox (test_exclude_patterns_in_workspace_scan and test_exclude_patterns_glob_matching in tests/test_config.rs) — they seem to expect fixture files that aren't reachable in the sandboxed environment.

Proposal

Add a flake.nix to the repo that exposes the package as an output. This would let Nix users install it directly as a flake input and would also make a future nixpkgs submission straightforward. If you could also push a nixpkgs submission forward I'd be very grateful.

Happy to open a PR for this if you're interested.