Emma Thorpe 89850b37ce ci: run full nix flake check + add nix-community substituter ...

Replace the formatting-only build with `nix flake check`, so deadnix,
statix and the pre-commit hooks are enforced in CI (not just local
hooks). Add the nix-community binary cache to the runner's nix config to
speed up the check closure. The explicit per-host eval pass is kept for
granular output.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-10 16:46:19 +01:00

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workflows

ci: run full nix flake check + add nix-community substituter

2026-06-10 16:46:19 +01:00