anchor.diff:      callPackage ../development/python-modules/feedparser/5.nix { };
   
     fenics = callPackage ../development/libraries/science/math/fenics {
  -    inherit (pkgs) pkg-config;
       pytest = self.pytest_4;
     };
   
  
positive.code: 
    sendgrid = callPackage ../development/python-modules/sendgrid { };
  
    sentencepiece = callPackage ../development/python-modules/sentencepiece { inherit (pkgs) sentencepiece pkg-config; };
  
    sentinel = callPackage ../development/python-modules/sentinel { };
  
  
negative.code: 
    subprocess32 = callPackage ../development/python-modules/subprocess32 { };
  
    subunit = callPackage ../development/python-modules/subunit { inherit (pkgs) subunit cppunit check; };
  
    suds = callPackage ../development/python-modules/suds { };
  
  