python3Packages.yarl: fix build

2020-08-16 15:38:52 -07:00
parent 71f1ac28d4
commit ab4f2ad832
1 changed files with 7 additions and 1 deletions
--- a/pkgs/development/python-modules/yarl/default.nix
+++ b/pkgs/development/python-modules/yarl/default.nix
@@ -1,9 +1,12 @@
 { stdenv
+, lib
 , fetchPypi
 , buildPythonPackage
+, pythonOlder
 , multidict
 , pytestrunner
 , pytest
+, typing-extensions
 , idna
 }:

@@ -17,7 +20,10 @@ buildPythonPackage rec {
  };

  checkInputs = [ pytest pytestrunner ];
-  propagatedBuildInputs = [ multidict idna ];
+  propagatedBuildInputs = [ multidict idna ]
+    ++ lib.optionals (pythonOlder "3.8") [
+      typing-extensions
+    ];

  meta = with stdenv.lib; {
    description = "Yet another URL library";