anchor.diff:  
     src = fetchurl {
       url = "https://github.com/bazelbuild/bazel/releases/download/${version}/bazel-${version}-dist.zip";
  -    sha256 = "1w83zi6d9npi1jmiy022v92xp1cwdvn2qqgghlnl2v9sprryqlxz";
  +    sha256 = "1ca9pncnj6v4r1kvgxys7607wpz4d2ic6g0i7lpsc2zg2qwmjc67";
     };
   
     sourceRoot = ".";
  
positive.code: in
  stdenv.mkDerivation rec {
  
    version = "0.15.2";
  
    meta = with lib; {
      homepage = "https://github.com/bazelbuild/bazel/";
  
negative.code:       echo "build --host_copt=\"$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --host_copt=\"/g')\"" >> .bazelrc
        echo "build --linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --linkopt=\"-Wl,/g')\"" >> .bazelrc
        echo "build --host_linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --host_linkopt=\"-Wl,/g')\"" >> .bazelrc
        sed -i -e "362 a --copt=\"$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --copt=\"/g')\" \\\\" scripts/bootstrap/compile.sh
        sed -i -e "362 a --host_copt=\"$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --host_copt=\"/g')\" \\\\" scripts/bootstrap/compile.sh
        sed -i -e "362 a --linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --linkopt=\"-Wl,/g')\" \\\\" scripts/bootstrap/compile.sh
        sed -i -e "362 a --host_linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --host_linkopt=\"-Wl,/g')\" \\\\" scripts/bootstrap/compile.sh
  
        # --experimental_strict_action_env (which will soon become the
        # default, see bazelbuild/bazel#2574) hardcodes the default
  