flake.nix uses outdated 22.05 nixos release for tests

[trofi]

This causes a few issues:

1. It masks the fact that submodule tests fail to run on modern git
2. It brings binutils/gold failures in CI that were fixed in binutils upstream. Example ICE in ld.gold: https://github.com/NixOS/nix/actions/runs/3691026206/jobs/6248648814

I think it comes from:

$ fgrep 22.05 flake.nix
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.05-small";

I did not manage to bump it to 22.11 as git submodule tests look non-trivial. Fun fact: in nixpkgs git tests are skipped as git is not added to nativeBuildInputs.

I can propose a PR with disable submodule tests. WDYT?

[cole-h]

Is this still an issue now that #7367 has merged?

[trofi]

Ah, nice! Looks good enough. There are a few minor warnings in use of outdated options but they can be handled separately:

$ nix flake check
trace: warning: The option `nix.useSandbox' defined in `makeTest parameters' has been renamed to `nix.settings.sandbox'.
trace: warning: The option `nix.useSandbox' defined in `makeTest parameters' has been renamed to `nix.settings.sandbox'.
...

Thank you!

[trofi]

Sent #7507 to follow up.