initial commit for module-refactor

modules/sys/environment/nix.nix

@@ -0,0 +1,21 @@
+{lib, config, ... }: {
+  options = {
+    nixSettings.enable = lib.mkEnableOption "enables my nixos settings";
+  };
+  config = lib.mkIf config.nixSettings.enable {
+    nix = {
+      settings = {
+        auto-optimise-store = true;
+        experimental-features = ["nix-command" "flakes"];
+        substituters = ["https://nix-gaming.cachix.org"];
+      };
+      gc = {
+        automatic = true;
+        dates = "weekly";
+        options = "--delete-older-than 7d";
+      };
+    };
+    time.timeZone = "America/New_York";
+    i18n.defaultLocale = "en_US.UTF-8";
+  };
+}