nixos-config
My NixOS configuration files for my laptop and the server running this site.
Cheatsheet
Prefer the new nix CLI when possible instead of the old nix-* commands. It's way better.
| Task | Command |
|---|---|
| Run program | nix run nixpkgs#hello (needs -- if passing args) |
| Run program from another Nixpkgs repo | nix run github:Toby222/nixpkgs#space-station-14-launcher |
| Clean Nix store | sudo nix-collect-garbage and nix store optimise |
| Get size of Nix store | sqlite3 'file:/nix/var/nix/db/db.sqlite?readonly=true&immutable=true' 'SELECT SUM(narSize) FROM ValidPaths' |
| Get largest packages | sqlite3 'file:/nix/var/nix/db/db.sqlite?readonly=true&immutable=true' 'SELECT * FROM ValidPaths ORDER BY narSize DESC LIMIT 50' |
| Check if anything depends on path | nix-store --query --referrers /nix/store/blah |
| List system generations | nixos-rebuild list-generations |
| Switch to generation | sudo nix-env --switch-generation 12345 -p /nix/var/nix/profiles/system and sudo /nix/var/nix/profiles/system/bin/switch-to-configuration switch |
| Run Nix file | nix eval -f main.nix |
| Build VM from config | nixos-rebuild build-vm |
| Deploy using signing key | LOCAL_KEY=key deploy -s . |
| Run AppImage | appimage-run blah.AppImage |
| Get changes between system generations | nix profile diff-closures --profile /nix/var/nix/profiles/system |
| Install specific version of package | https://lazamar.co.uk/nix-versions/ |
| Inspect system config in REPL | nix repl .#nixosConfigurations.$hostname |