Initial commit

modules/nix.nix

@@ -0,0 +1,22 @@
+{
+  pkgs,
+  lib,
+  ...
+}: {
+  # do garbage collection weekly to keep disk usage low
+  nix = {
+    settings = {
+      experimental-features = ["nix-command" "flakes"];
+    };
+
+    gc = {
+      automatic = lib.mkDefault true;
+      dates = lib.mkDefault "weekly";
+      options = lib.mkDefault "--delete-older-than 7d";
+    };
+  };
+
+  # Allow unfree packages
+  nixpkgs.config.allowUnfree = true;
+
+}