anchor.diff:      };
     };
   
  +  pants = buildPythonPackage rec {
  +    pname   = "pantsbuild.pants";
  +    version = "1.2.1";
  +    name    = "${pname}-${version}";
  +
  +    src = self.fetchPypi {
  +      inherit pname version;
  +      sha256 = "1bnzhhd2acwk7ckv56xzg2d9vxacl3k5bh13bsjxymnq3spm962w";
  +    };
  +
  +    prePatch = ''
  +      sed -E -i "s/'([[:alnum:].-]+)[=><][^']*'/'\\1'/g" setup.py
  +    '';
  +
  +    # Unnecessary, and causes some really weird behavior around .class files, which
  +    # this package bundles. See https://github.com/NixOS/nixpkgs/issues/22520. 
  +    dontStrip = true;
  +
  +    propagatedBuildInputs = with self; [
  +      ansicolors beautifulsoup4 cffi coverage docutils fasteners futures
  +      isort lmdb markdown mock packaging pathspec pep8 pex psutil pyflakes
  +      pygments pystache pytestcov pytest pywatchman requests2 scandir
  +      setproctitle setuptools six thrift wheel twitter-common-dirutil
  +      twitter-common-confluence twitter-common-collections
  +    ];
  +  };
  +
     paperwork-backend = buildPythonPackage rec {
       name = "paperwork-backend-${version}";
       version = "1.0.6";
  
positive.code:     };
    };
  
    pathtools = buildPythonPackage rec {
      name = "pathtools-${version}";
      version = "0.1.2";
  
negative.code:       description = "Twitter API library";
        license     = licenses.mit;
        maintainers = with maintainers; [ thoughtpolice ];
      };
    };
  
    twitter-common-collections = buildPythonPackage rec {
      pname   = "twitter.common.collections";
      version = "0.3.9";
      name    = "${pname}-${version}";
  
      src = self.fetchPypi {
        inherit pname version;
        sha256 = "0wf8ks6y2kalx2inzayq0w4kh3kg25daik1ac7r6y79i03fslsc5";
      };
  
      propagatedBuildInputs = with self; [ twitter-common-lang ];
    };
  
    twitter-common-confluence = buildPythonPackage rec {
      pname   = "twitter.common.confluence";
      version = "0.3.9";
      name    = "${pname}-${version}";
  
      src = self.fetchPypi {
        inherit pname version;
        sha256 = "1i2fjn23cmms81f1fhvvkg6hgzqpw07dlqg3ydz6cqv2glw7zq26";
      };
  
      propagatedBuildInputs = with self; [ twitter-common-log ];
    };
  
    twitter-common-dirutil = buildPythonPackage rec {
      pname   = "twitter.common.dirutil";
      version = "0.3.9";
      name    = "${pname}-${version}";
  
      src = self.fetchPypi {
        inherit pname version;
        sha256 = "1wpjfmmxsdwnbx5dl13is4zkkpfcm94ksbzas9y2qhgswfa9jqha";
      };
  
      propagatedBuildInputs = with self; [ twitter-common-lang ];
    };
  
    twitter-common-lang = buildPythonPackage rec {
      pname   = "twitter.common.lang";
      version = "0.3.9";
      name    = "${pname}-${version}";
  
      src = self.fetchPypi {
        inherit pname version;
        sha256 = "1l8fmnsrx7hgg3ivslg588rnl9n1gfjn2w6224fr8rs7zmkd5lan";
      };
    };
  
    twitter-common-log = buildPythonPackage rec {
      pname   = "twitter.common.log";
      version = "0.3.9";
      name    = "${pname}-${version}";
  
      src = self.fetchPypi {
        inherit pname version;
        sha256 = "1bdzbxx2bxwpf57xaxfz1nblzgfvhlidz8xqd7s84c62r3prh02v";
      };
  
      propagatedBuildInputs = with self; [ twitter-common-options twitter-common-dirutil ];
    };
  
    twitter-common-options = buildPythonPackage rec {
      pname   = "twitter.common.options";
      version = "0.3.9";
      name    = "${pname}-${version}";
  
      src = self.fetchPypi {
        inherit pname version;
        sha256 = "0d1czag5mcxg0vcnlklspl2dvdab9kmznsycj04d3vggi158ljrd";
      };
    };
  
  