anchor.diff: -{ stdenv, bazel_4, buildBazelPackage, isPy3k, lib, fetchFromGitHub, symlinkJoin
  +{ stdenv, bazel_5, buildBazelPackage, isPy3k, lib, fetchFromGitHub, symlinkJoin
   , addOpenGLRunpath, fetchpatch, patchelfUnstable
   # Python deps
   , buildPythonPackage, pythonOlder, python
  
positive.code:     stdenv = llvmPackages_11.stdenv;
    })) {
      name = "${pname}-${version}";
      bazel = bazel_4;
  
      src = fetchFromGitHub {
        owner = "tensorflow";
        repo = "tensorflow";
        rev = "v${version}";
        hash = "sha256-kILNvwHi29F8BClYsZw+7RT2t6x57AsAHURVTfs5uOE=";
      };
  
      # On update, it can be useful to steal the changes from gentoo
  
negative.code: 
    tfFeature = x: if x then "1" else "0";
  
    version = "2.10.0-rc0";
    variant = if cudaSupport then "-gpu" else "";
    pname = "tensorflow${variant}";
  
  