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-rw-r--r--pkgs/development/python-modules/variants/default.nix9
1 files changed, 6 insertions, 3 deletions
diff --git a/pkgs/development/python-modules/variants/default.nix b/pkgs/development/python-modules/variants/default.nix
index af2224e3536..11c50646700 100644
--- a/pkgs/development/python-modules/variants/default.nix
+++ b/pkgs/development/python-modules/variants/default.nix
@@ -1,10 +1,13 @@
 { buildPythonPackage
+, isPy27
 , fetchPypi
 , pytestrunner
 , setuptools_scm
+, singledispatch
 , pytest
 , lib
 }:
+
 buildPythonPackage rec {
   pname = "variants";
   version = "0.2.0";
@@ -21,12 +24,12 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-  ];
-  
+  ] ++ lib.optionals isPy27 [ singledispatch ];
+
   meta = with lib; {
     description = "Library providing syntactic sugar for creating variant forms of a canonical function";
     homepage = "https://github.com/python-variants/variants";
     license = licenses.asl20;
     maintainers = with maintainers; [ rakesh4g ];
   };
-}
\ No newline at end of file
+}