anchor.diff: -{ stdenv, buildPythonPackage, fetchFromGitHub, isPy3k, pycryptodome, chardet, nose, sortedcontainers, fetchpatch }:
  +{ stdenv, buildPythonPackage, fetchFromGitHub, isPy3k, pycryptodome, chardet, nose, sortedcontainers }:
   
   buildPythonPackage rec {
     pname = "pdfminer_six";
  -  version = "20200402";
  +  version = "20200517";
   
     disabled = !isPy3k;
   
  
positive.code:     owner = "pdfminer";
      repo = "pdfminer.six";
      rev = version;
      sha256 = "1wl64r3ifpwi7mm5pcxc0ji7w380nxcq3zrv66n95lglm4zqkf26";
    };
  
    patches = [
      # Add shebang line to scripts. See: https://github.com/pdfminer/pdfminer.six/pull/408
      (fetchpatch {
        url = "https://github.com/pdfminer/pdfminer.six/commit/0c2f44b6de064d9a3cea99bde5b8e9c6a525a69c.patch";
        sha256 = "1vml66grnvg4g26mya24kiyxsz809d4mr7wz8qmawjbn4ss65y21";
        excludes = [ "CHANGELOG.md" ];
      })
    ];
  
    propagatedBuildInputs = [ chardet pycryptodome sortedcontainers ];
  
  
negative.code:     maintainers = with maintainers; [ psyanticy marsam ];
    };
  }
  