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{ config, lib, pkgs, ... }:
let cfg = config.personal.nix;
in {
options.personal.nix = {
enable = lib.mkEnableOption "nix configuration";
autoUpgrade = lib.mkEnableOption "automatic system and nixpkgs upgrade";
flake = lib.mkOption {
type = with lib.types; nullOr str;
default = null;
};
gc.enable = lib.mkEnableOption "garbage collection";
};
config = lib.mkIf cfg.enable {
nixpkgs.config = { allowUnfree = true; };
nix = {
settings = {
auto-optimise-store = true;
experimental-features = [ "nix-command" "flakes" ];
};
gc = lib.mkIf cfg.gc.enable {
automatic = true;
dates = "daily";
options = "--delete-old";
};
};
system.autoUpgrade = lib.mkIf cfg.autoUpgrade {
enable = true;
flake = cfg.flake;
flags = if (cfg.flake == null) then
[ "--upgrade-all" ]
else
[ "--commit-lock-file" ] ++ pkgs.personal.lib.updateInputFlag "nixpkgs";
};
systemd.services = {
nix-gc.after =
lib.optional (cfg.autoUpgrade && cfg.gc.enable) "nixos-upgrade.service";
nix-gc-remove-dead-roots = {
enable = cfg.gc.enable;
description = "Remove dead symlinks in /nix/var/nix/gcroots";
serviceConfig.Type = "oneshot";
script = "find /nix/var/nix/gcroots -xtype l -delete";
before = lib.mkIf config.nix.gc.automatic [ "nix-gc.service" ];
wantedBy = lib.mkIf config.nix.gc.automatic [ "nix-gc.service" ];
};
};
personal.monitoring.services = [ "nixos-upgrade" "nix-gc" ];
programs.git =
lib.mkIf (cfg.flake != null && lib.hasPrefix "git+file" cfg.flake) {
enable = true;
config.user = {
name = "Root user of ${config.networking.hostName}";
email = "root@${config.networking.hostName}";
};
};
};
}
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