anchor.diff:  
     pyatmo = callPackage ../development/python-modules/pyatmo { };
   
  -  pyatspi = callPackage ../development/python-modules/pyatspi { inherit (pkgs) pkg-config; };
  +  pyatspi = callPackage ../development/python-modules/pyatspi { };
   
     pyatv = callPackage ../development/python-modules/pyatv { };
   
  
positive.code: 
    wxPython30 = callPackage ../development/python-modules/wxPython/3.0.nix {
      wxGTK = pkgs.wxGTK30;
      inherit (pkgs) pkg-config;
    };
  
    wxPython_4_0 = callPackage ../development/python-modules/wxPython/4.0.nix {
      inherit (pkgs) pkg-config;
      inherit (pkgs.darwin.apple_sdk.frameworks) AudioToolbox Carbon Cocoa CoreFoundation IOKit OpenGL;
      wxGTK = pkgs.wxGTK30.override {
        withGtk2 = false;
  
negative.code: 
    graphql-server-core = callPackage ../development/python-modules/graphql-server-core { };
  
    graph-tool = callPackage ../development/python-modules/graph-tool/2.x.x.nix { };
  
    graphtage = callPackage ../development/python-modules/graphtage { };
  
  