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-rw-r--r--pkgs/development/python-modules/mypy/extensions.nix4
1 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/development/python-modules/mypy/extensions.nix b/pkgs/development/python-modules/mypy/extensions.nix
index f57ac12c0da8..36407fd684ae 100644
--- a/pkgs/development/python-modules/mypy/extensions.nix
+++ b/pkgs/development/python-modules/mypy/extensions.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, buildPythonPackage, typing, isPy3k }:
+{ stdenv, fetchPypi, buildPythonPackage, typing, pythonOlder }:
 
 buildPythonPackage rec {
   pname = "mypy_extensions";
@@ -12,7 +12,7 @@ buildPythonPackage rec {
     sha256 = "04h8brrbbx151dfa2cvvlnxgmb5wa00mhd2z7nd20s8kyibfkq1p";
   };
 
-  propagatedBuildInputs = [ typing ];
+  propagatedBuildInputs = if pythonOlder "3.5" then [ typing ] else [ ];
 
   meta = with stdenv.lib; {
     description = "Experimental type system extensions for programs checked with the mypy typechecker";