diff --git a/pkgs/build-support/writers/scripts.nix b/pkgs/build-support/writers/scripts.nix
index 9026c7ea42ca..5b6a2b2640fc 100644
--- a/pkgs/build-support/writers/scripts.nix
+++ b/pkgs/build-support/writers/scripts.nix
@@ -1196,15 +1196,12 @@ rec {
       ])
       // {
         interpreter =
-          if pythonPackages != pkgs.pypy2Packages || pythonPackages != pkgs.pypy3Packages then
-            if libraries == [ ] then
-              python.interpreter
-            else if (lib.isFunction libraries) then
-              (python.withPackages libraries).interpreter
-            else
-              (python.withPackages (ps: libraries)).interpreter
+          if libraries == [ ] then
+            python.interpreter
+          else if (lib.isFunction libraries) then
+            (python.withPackages libraries).interpreter
           else
-            python.interpreter;
+            (python.withPackages (ps: libraries)).interpreter;
         check = optionalString (python.isPy3k && doCheck) (
           writeDash "pythoncheck.sh" ''
             exec ${buildPythonPackages.flake8}/bin/flake8 --show-source ${ignoreAttribute} "$1"