anchor.diff:          };
           propagatedBuildInputs = [ async-timeout ]
             ++ (with pythonPackages; [ attrs chardet multidict yarl idna-ssl ]);
  -      }));
  -  aiohttp-cors = (stdenv.lib.overrideDerivation pythonPackages.aiohttp-cors
  +      });
  +  aiohttp-cors = pythonPackages.aiohttp-cors.overrideAttrs
       (oldAttrs:
         rec {
           pname = "aiohttp-cors";
  
positive.code:           inherit pname version;
            sha256 = "1l3kg062m02mph6rf9rdv8r5c5n356clxa6b6mrn0i77vk9g9kq0";
          };
        }));
    aiohttp = (stdenv.lib.overrideDerivation pythonPackages.aiohttp
      (oldAttrs:
        rec {
          pname = "aiohttp";
  
negative.code: 
  let
    pythonPackages = python36Packages;
    async-timeout = pythonPackages.async-timeout.overrideAttrs
      (oldAttrs:
        rec {
          pname = "async-timeout";
  