initial config commit

modules/nixos/features/nix-settings.nix

@@ -0,0 +1,25 @@
+{ config, lib, ... }:
+let
+  feature = "nix-settings";
+in
+{
+  config = lib.mkIf config.${feature}.enable {
+    nix = {
+      optimise.automatic = true;
+      settings = {
+        experimental-features = [
+          "nix-command"
+          "flakes"
+        ];
+        trusted-users = [
+          "will"
+          "srv"
+        ];
+      };
+    };
+  };
+
+  imports = [ ];
+
+  options.${feature}.enable = lib.mkEnableOption "enables ${feature}";
+}