diff --git a/flake.nix b/flake.nix
index 799f13c9..aaca0c42 100644
--- a/flake.nix
+++ b/flake.nix
@@ -19,9 +19,10 @@
     packages = genSystems (system: rec {
       default = pkgs.${system}.callPackage ./nix {inherit version;};
       ags = default;
-      agsWithTypes = pkgs.${system}.callPackage ./nix {
+      agsWithTypes = default; # for backwards compatibility
+      agsNoTypes = pkgs.${system}.callPackage ./nix {
         inherit version;
-        buildTypes = true;
+        buildTypes = false;
       };
     });
 
diff --git a/nix/default.nix b/nix/default.nix
index b68c0304..f20f04d7 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -23,7 +23,7 @@
 , pam
 , extraPackages ? [ ]
 , version ? "git"
-, buildTypes ? false
+, buildTypes ? true
 }:
 
 let
@@ -53,8 +53,8 @@ stdenv.mkDerivation rec {
     '';
   };
 
-  mesonFlags = builtins.concatLists [
-    (lib.optional buildTypes "-Dbuild_types=true")
+  mesonFlags = [
+    "-Dbuild_types=${if buildTypes then "true" else "false"}"
   ];
 
   prePatch = ''