anchor.diff:  
       overrides = self: super: {
         inherit (prevStage)
  +        ccWrapperStdenv
           binutils gcc-unwrapped coreutils gnugrep
           perl paxctl gnum4 bison;
         # This also contains the full, dynamically linked, final Glibc.
  
positive.code: 
      overrides = self: super: rec {
        inherit (prevStage)
          binutils glibc coreutils gnugrep
          perl patchelf linuxHeaders gnum4 bison;
        # Link GCC statically against GMP etc.  This makes sense because
  
negative.code:       stdenv = thisStdenv;
      };
  
    baseCase = {}: {
      __raw = true;
  
      gcc-unwrapped = null;
      glibc = null;
      binutils = null;
  