1 files changed, 4 insertions, 2 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/m2crypto/default.nix b/nixpkgs/pkgs/development/python-modules/m2crypto/default.nix
index cd9781dbc889..0ccf55e5bc4e 100644
--- a/nixpkgs/pkgs/development/python-modules/m2crypto/default.nix
+++ b/nixpkgs/pkgs/development/python-modules/m2crypto/default.nix
@@ -1,7 +1,9 @@
 { stdenv
+, lib
 , fetchpatch
 , buildPythonPackage
 , fetchPypi
+, pythonOlder
 , swig2
 , openssl
 , typing
@@ -23,12 +25,12 @@ buildPythonPackage rec {
       sha256 = "0z5qnkndg6ma5f5qqrid5m95i9kybsr000v3fdy1ab562kf65a27";
     })
   ];
-  patchFlags = "-p0";
+  patchFlags = [ "-p0" ];
 
   nativeBuildInputs = [ swig2 ];
   buildInputs = [ swig2 openssl ];
 
-  propagatedBuildInputs = [ typing ];
+  propagatedBuildInputs = lib.optional (pythonOlder "3.5") typing;
 
   preConfigure = ''
     substituteInPlace setup.py --replace "self.openssl = '/usr'" "self.openssl = '${openssl.dev}'"