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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;};
environment.etc."nix/registry.json".text = lib.mkForce (builtins.toJSON {
version = 2;
});
nix = {
package =
lib.getAttr (
if (builtins.compareVersions lib.trivial.version "23.11" > 0)
then "latest"
else "unstable"
)
pkgs.nixVersions;
settings = {
auto-optimise-store = true;
experimental-features = ["nix-command" "flakes"];
substituters = ["https://devenv.cachix.org/" "https://nix-community.cachix.org/"];
trusted-public-keys = ["devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw=" "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="];
};
extraOptions = ''
!include secrets.conf
'';
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 = {
nixos-upgrade.personal.monitor = true;
nix-gc = {
after =
lib.optional (cfg.autoUpgrade && cfg.gc.enable)
"nixos-upgrade.service";
personal.monitor = true;
};
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.monitor = true;
};
nix-gc-remove-old-hm-gens = let
user = config.personal.user;
in {
enable = cfg.gc.enable && user.enable && user.homeManager.enable;
description = "Remove old Home Manager generations for user ${user.name}";
serviceConfig.Type = "oneshot";
script = "${pkgs.nix}/bin/nix-env --profile /home/${user.name}/.local/state/nix/profiles/home-manager --delete-generations old";
before = lib.mkIf config.nix.gc.automatic ["nix-gc.service"];
wantedBy = lib.mkIf config.nix.gc.automatic ["nix-gc.service"];
personal.monitor = true;
};
};
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}";
};
};
};
}
|
