initial commit

modules/nix.nix

@@ -0,0 +1,38 @@
+{
+  lib,
+  config,
+  ...
+}:
+with lib; let
+  cfg = config.modules.nix;
+in {
+  options.modules.nix = {
+    disableSandbox = mkEnableOption "Disables Nix sandbox";
+    gc = {
+      automatic = mkOption {
+        type = types.bool;
+        default = true;
+      };
+      dates = mkOption {
+        type = types.str;
+        default = "Monday 01:00 UTC";
+      };
+      options = mkOption {
+        type = types.str;
+        default = "--delete-older-than 30d";
+      };
+    };
+  };
+
+  config = {
+    nix = {
+      settings = {
+        sandbox = cfg.disableSandbox;
+        experimental-features = ["nix-command" "flakes"];
+        auto-optimise-store = true;
+      };
+      inherit (cfg) gc;
+    };
+    nixpkgs.config.allowUnfree = true;
+  };
+}