anchor.diff:      fi
       while read f; do
         echo "$f" | grep -q '^./\(src\|pkg/[^/]*\)/${goPackagePath}'"$subPackageExpr" || continue
  -      mkdir -p "$(dirname "$out/share/go/$f")"
  -      cp "$NIX_BUILD_TOP/go/$f" "$out/share/go/$f"
  +      mkdir -p "$(dirname "$NIX_BUILD_TOP/${name}/$f")"
  +      cp "$NIX_BUILD_TOP/go/$f" "$NIX_BUILD_TOP/${name}/$f"
       done < <(find . -type f)
  +    popd
  +
  +    pushd "$NIX_BUILD_TOP"
  +    mkdir -p "$out/share/go"
  +    tar --sort=name --owner=0 --group=0 --numeric-owner \
  +      --mode=go=rX,u+rw,a-s \
  +      --mtime=@946713600 \
  +      -c "${name}" | brotli --quality 6 --output "$out/share/go/files.tar.br"
       popd
   
       mkdir -p $bin
  
positive.code:     runHook preInstall
  
      mkdir -p $out
      pushd "$NIX_BUILD_TOP/go"
      if [ -n "$subPackages" ]; then
        subPackageExpr='/\('
  
negative.code:     rmdir extraSrc
  
    '') + ''
      # Unpack all of the tarballs of other go sources
      OLDIFS="$IFS"
      IFS=":"
      NEWPATH=$NIX_BUILD_TOP/go
      mkdir -p "$NIX_BUILD_TOP/unpack"
      pushd "$NIX_BUILD_TOP/unpack"
      for path in $GOPATH; do
        if [ -f "$path/files.tar.br" ]; then
          brotli --decompress --input "$path/files.tar.br" | tar x
          echo "Decompressing Archive"
        elif [ -d "$path/src" ]; then
          NEWPATH="$NEWPATH:$path"
        fi
      done
      EXTRAPATH="$(find $NIX_BUILD_TOP/unpack -maxdepth 1 -mindepth 1 | tr '\n' ':')"
      popd
      export GOPATH="$EXTRAPATH$NEWPATH"
      IFS="$OLDIFS"
  
      runHook postConfigure
    '';
  