nix-darwin

Declarative macOS system config for cm01 (MacBook Air M1, headless devbox).

Rebuild

sudo darwin-rebuild switch --flake ~/.config/nix-darwin

Bootstrap on fresh install

1. Install Nix (Determinate Systems installer)
2. Install Homebrew
3. Clone this repo to ~/.config/nix-darwin/
4. Run the rebuild command above
5. Restore sops age key from 1Password:

mkdir -p ~/.config/sops/age
op read "op://Private/talos/sops-age-key" > ~/.config/sops/age/keys.txt
chmod 600 ~/.config/sops/age/keys.txt

Nix store maintenance

GC and optimise must be run manually (Determinate installer manages the nix daemon):

nix-collect-garbage --delete-older-than 14d
nix store optimise

Notes

• nix.enable = false because Determinate Systems installer manages the nix daemon
• Flake files must be git added before darwin-rebuild can see them
• Commit flake.lock -- it pins your exact nixpkgs revision