working emacs?

lib/options.nix

@@ -0,0 +1,17 @@
+# Taken from: https://github.com/hlissner/dotfiles/blob/master/lib/options.nix
+{ lib, ... }:
+
+let inherit (lib) mkOption types;
+in {
+  mkOpt = type: default: mkOption { inherit type default; };
+
+  mkOpt' = type: default: description:
+    mkOption { inherit type default description; };
+
+  mkBoolOpt = default:
+    mkOption {
+      inherit default;
+      type = types.bool;
+      example = true;
+    };
+}