anchor.diff:    mesa_drivers = mesaDarwinOr (
       let mo = mesa_noglu.override {
         grsecEnabled = config.grsecurity or false;
  -      llvmPackages = llvmPackages_36; # various problems with 3.7; see #11367, #11467
       };
       in mo.drivers
     );
  
positive.code:     inherit (perlPackages) XMLSimple;
    };
  
    include-what-you-use = callPackage ../development/tools/analysis/include-what-you-use {
      llvmPackages = llvmPackages_37;
    };
  
    indent = callPackage ../development/tools/misc/indent { };
  
  
negative.code: 
    isocodes = callPackage ../development/libraries/iso-codes { };
  
    ispc = callPackage ../development/compilers/ispc { };
  
    itk = callPackage ../development/libraries/itk { };
  
  