anchor.diff: -{ lib, appleDerivation, fetchzip, bsdmake, perl, flex, bison
  +{ lib, stdenv, buildPackages, appleDerivation, fetchzip, bsdmake, perl, flex, bison
   }:
   
   # this derivation sucks
  
positive.code: 
      bsdmake -C usr-share-locale.tproj
  
      clang ${recentAdvCmds}/ps/*.c -o ps
    '';
  
    installPhase = ''
  
negative.code: };
  
  in appleDerivation {
    depsBuildBuild = [ buildPackages.stdenv.cc ];
    nativeBuildInputs = [ bsdmake perl bison flex ];
    buildInputs = [ flex ];
  
  