anchor.diff:  
   rec {
   
  +
     coreutilsMinimal = (pkgs.coreutils.override (args: {
       # We want coreutils without ACL support.
       aclSupport = false;
       # Our tooling currently can't handle scripts in bin/, only ELFs and symlinks.
       singleBinary = "symlinks";
     })).crossDrv;
  +
  +  tarMinimal = (pkgs.gnutar.override { acl = null; }).crossDrv;
   
     busyboxMinimal = (pkgs.busybox.override {
       useMusl = true;
  
positive.code:     '';
    }).crossDrv;
  
    inherit pkgs;
  
    build =
  
      stdenv.mkDerivation {
        name = "build";
  
        buildInputs = [nukeReferences cpio binutilsCross];
  
        crossConfig = stdenv.cross.config;
  
        buildCommand = ''
  	      set -x
          mkdir -p $out/bin $out/lib $out/libexec
  
          # Copy what we need of Glibc.
  
negative.code:         cp -d ${gnugrep}/bin/grep $out/bin
          cp ${gawk}/bin/gawk $out/bin
          cp -d ${gawk}/bin/awk $out/bin
          cp ${tarMinimal}/bin/tar $out/bin
          cp ${gzip}/bin/gzip $out/bin
          cp ${bzip2.bin}/bin/bzip2 $out/bin
          cp -d ${gnumake}/bin/* $out/bin
  