modules/teh-nix/nix.nix


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{ inputs, ... }:
{
    flake.modules.nixos.teh-nix =
        { config, lib, ... }:
        {
            options.teh-nix.nix = with lib; {
                enable = mkEnableOption "Use the TehNix nix settings";
            };

            config = lib.mkIf config.teh-nix.nix.enable {
                nix.nixPath = [ "/etc/nix/path" ];
                nix.registry.nixpkgs.flake = inputs.nixpkgs;
                environment.etc."nix/path/nixpkgs".source = inputs.nixpkgs;

                nix = {
                    settings = {
                        experimental-features = [ "nix-command" "flakes" ];
                        auto-optimise-store = true;

                        trusted-users = [ "boss" ];

                        substituters = [
                            "https://cache.nixos.org"
                        ];

                        # trusted-public-keys = [
                        #     "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
                        # ];
                    };
                    optimise.automatic = true;
                };

                # nh's cleaner replaces nix.gc (the nh module asserts they aren't both on)
                programs.nh = {
                    enable = true;
                    clean = {
                        enable = true;
                        dates = "weekly";
                        # --no-direnv keeps nix-direnv's gcroots so dev shells survive
                        extraArgs = "--keep-since 7d --keep 5 --no-direnv";
                    };
                };
            };
        };
}