diff --git a/flake.nix b/flake.nix
index a3ab370..9a14c89 100644
--- a/flake.nix
+++ b/flake.nix
@@ -12,12 +12,17 @@
           emacs-overlay.overlays.default
         ];
       };
+      mkEmacs = pkgs: v: pkgs.emacsWithPackagesFromUsePackage {
+        config = ./main.org;
+        package = pkgs."${v}${pkgs.lib.optionalString pkgs.stdenv.isDarwin "-macport"}";
+      };
     in {
       packages = {
-        emacs = pkgs.emacsWithPackagesFromUsePackage {
-          config = ./main.org;
-          package = if pkgs.stdenv.isDarwin then pkgs.emacs29-macport else pkgs.emacs29;
-        };
+        me-emacs = mkEmacs pkgs "emacs29";
+      };
+
+      overlays.default = final: prev: {
+        me-emacs = mkEmacs final "emacs29";
       };
     });
 }