anchor.diff:        # Propagate the wrapped cc so that if you install the wrapper,
         # you get tools like gcov, the manpages, etc. as well (including
         # for binutils and Glibc).
  -      echo ${cc} ${cc.man or ""} ${binutils_bin} ${if libc == null then "" else libc_bin} > $out/nix-support/propagated-user-env-packages
  +      echo ${cc} ${binutils_bin} ${if libc == null then "" else libc_bin} > $out/nix-support/propagated-user-env-packages
  +      echo ${cc.man or ""}  > $man/nix-support/propagated-user-env-packages
   
         echo ${toString extraPackages} > $out/nix-support/propagated-native-build-inputs
       ''
  
positive.code:   inherit cc shell libc_bin libc_dev libc_lib binutils_bin coreutils_bin;
    gnugrep_bin = if nativeTools then "" else gnugrep;
  
  
    passthru = {
      inherit libc nativeTools nativeLibc nativePrefix isGNU isClang default_cxx_stdlib_compile
  
negative.code: 
    buildCommand =
      ''
        mkdir -p $out/bin $out/nix-support $man/nix-support
  
        wrap() {
          local dst="$1"
  