anchor.diff:  
     ninja = callPackage ../development/tools/build-managers/ninja { };
   
  -  nixbang = callPackage ../development/tools/misc/nixbang {};
  +  nixbang = callPackage ../development/tools/misc/nixbang {
  +      pythonPackages = python3Packages;
  +  };
   
     nexus = callPackage ../development/tools/repository-managers/nexus { };
   
  
positive.code: 
    blender = callPackage  ../applications/misc/blender {
      cudatoolkit = cudatoolkit75;
    };
  
    bluefish = callPackage ../applications/editors/bluefish {
  
negative.code: 
    webfs = callPackage ../servers/http/webfs { };
  
    wikicurses = callPackage ../applications/misc/wikicurses {
      pythonPackages = python3Packages;
    };
  
    wineMinimal = callPackage ../misc/emulators/wine {
      wineRelease = config.wine.release or "stable";
  