anchor.diff:    src = {
       cpu = fetchurl {
         url = "https://storage.googleapis.com/jax-releases/nocuda/jaxlib-${version}-cp39-none-manylinux2010_x86_64.whl";
  -      sha256 = "1davmx9dvai8dq3h5ac82634gjhv6l46kq6baajrxjqczbp0w7m6";
  +      sha256 = "151p4vqli8x0iqgrzrr8piqk7d76a2xq2krf23jlb142iam5bw01";
       };
       gpu = fetchurl {
         # Note that there's also a release targeting cuDNN 8.2, but unfortunately
  
positive.code: #   * https://github.com/google/jax/issues/971#issuecomment-508216439
  #   * https://github.com/google/jax/issues/5723#issuecomment-913038780
  
  { addOpenGLRunpath, autoPatchelfHook, buildPythonPackage, config
  , fetchurl, isPy39, lib, stdenv
  # propagatedBuildInputs
  , absl-py, flatbuffers, scipy, cudatoolkit_11, cudnn
  # Options:
  , cudaSupport ? config.cudaSupport or false
  }:
  
  
negative.code: in
  buildPythonPackage rec {
    pname = "jaxlib";
    version = "0.3.0";
    format = "wheel";
  
    # At the time of writing (8/19/21), there are releases for 3.7-3.9. Supporting
  