Update

nixos/nix.nix

@@ -0,0 +1,22 @@
+{ config, ... }: {
+  nixpkgs.config.allowUnfree = true;
+  nix = {
+    extraOptions = ''
+      warn-dirty = false
+    '';
+    settings = {
+      auto-optimise-store = true;
+      experimental-features = [ "nix-command" "flakes" ];
+      substituters = [ "https://hyprland.cachix.org" ];
+      trusted-public-keys = [
+        "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
+      ];
+    };
+    gc = {
+      automatic = config.var.autoGarbageCollector;
+      persistent = true;
+      dates = "weekly";
+      options = "--delete-older-than 7d";
+    };
+  };
+}