Tests weren't actually executed before.
@ -13,8 +13,10 @@ pythonPackages.buildPythonApplication rec {
buildInputs = with pythonPackages; [ nose ];
# Automatic tests cannot be run because it needs to import some local modules for tests.
doCheck = false;
checkPhase = ''
nosetests $out
nosetests
'';
propagatedBuildInputs = with pythonPackages; [