diff --git a/pkgs/development/interpreters/python/2.7/default.nix b/pkgs/development/interpreters/python/2.7/default.nix
index 1bcb0777e85c..31839d24754e 100644
--- a/pkgs/development/interpreters/python/2.7/default.nix
+++ b/pkgs/development/interpreters/python/2.7/default.nix
@@ -141,9 +141,9 @@ let
 
         paxmark E $out/bin/python${majorVersion}
 
-        ${ optionalString includeModules "$out/bin/python ./setup.py build_ext"}
+        ${optionalString includeModules "$out/bin/python ./setup.py build_ext"}
 
-        rm "$out"/lib/python*/plat-linux2/regen # refers to glibc.dev
+        ${optionalString stdenv.isLinux ''rm "$out"/lib/python*/plat-linux2/regen # refers to glibc.dev''}
       '';
 
     passthru = rec {