anchor.diff: -{ stdenv
  -, lib
  +{ lib
  +, stdenv
  +, aiobotocore
  +, aiohttp
   , buildPythonPackage
  +, docutils
   , fetchPypi
  -, docutils
  -, aiobotocore
   , fsspec
  +, pythonOlder
   }:
   
   buildPythonPackage rec {
     pname = "s3fs";
     version = "2022.5.0";
  +  format = "setuptools";
  +
  +  disabled = pythonOlder "3.7";
   
     src = fetchPypi {
       inherit pname version;
  -    sha256 = "sha256-tAo8v6+Ay6uvDjMjMRF8ysaSkO/aw0cYT7OrYAP3BGU=";
  +    hash = "sha256-tAo8v6+Ay6uvDjMjMRF8ysaSkO/aw0cYT7OrYAP3BGU=";
     };
   
     buildInputs = [
  
positive.code: 
    propagatedBuildInputs = [
      aiobotocore
      fsspec
    ];
  
  
negative.code:   # pythonPackages.
    doCheck = false;
  
    pythonImportsCheck = [
      "s3fs"
    ];
  
    meta = with lib; {
      broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
  