diff --git a/mach_nix/nix/mkPython.nix b/mach_nix/nix/mkPython.nix
index af0e5a7..d953143 100644
--- a/mach_nix/nix/mkPython.nix
+++ b/mach_nix/nix/mkPython.nix
@@ -126,10 +126,9 @@ let
       });
       final_env = py_final_with_pkgs.override (oa: {
         inherit ignoreCollisions;
-        makeWrapperArgs = [
-          ''--suffix-each PATH ":" "${toString (map (p: "${p}/bin") extra_pkgs_other)}"''
-          ''--set QT_PLUGIN_PATH ${py_final_with_pkgs}/plugins''
-        ];
+        makeWrapperArgs =
+          (map (p: "--suffix PATH : ${p}/bin") extra_pkgs_other)
+          ++ [''--set QT_PLUGIN_PATH ${py_final_with_pkgs}/plugins''];
       });
     in let
       self = final_env.overrideAttrs (oa: {