anchor.diff:    };
   
     platforms = import ./platforms.nix;
  -  
  +
   
     ### TOOLS
   
  
positive.code: 
    zathura = callPackage ../applications/misc/zathura { };
  
    zynaddsubfx = callPackage ../applications/audio/zynaddsubfx { 
      fltk = fltk11;
    };
  
  
negative.code:   pure = callPackage ../development/interpreters/pure {};
  
    python = python27;
  
    python26 = callPackage ../development/interpreters/python/2.6 { };
  
    python27 = callPackage ../development/interpreters/python/2.7 { };
  