anchor.diff:       ''}
   
       configureFlagsArray=( --enable-shared --with-threads
  -                          CPPFLAGS="${makeSearchPathOutput "dev" "include" buildInputs}"
  -                          LDFLAGS="${makeLibraryPath buildInputs}"
  +                          CPPFLAGS="${concatStringsSep " " (map (p: "-I${getDev p}/include") buildInputs)}"
  +                          LDFLAGS="${concatStringsSep " " (map (p: "-L${getLib p}/lib") buildInputs)}"
                             LIBS="${optionalString (!stdenv.isDarwin) "-lcrypt"} ${optionalString (ncurses != null) "-lncurses"}"
                           )
     '';
  
positive.code:       hierarchical packages; exception-based error handling; and very
        high level dynamic data types.
      '';
      license = stdenv.lib.licenses.psfl;
      platforms = with stdenv.lib.platforms; linux ++ darwin;
      maintainers = with stdenv.lib.maintainers; [ simons chaoflow iElectric cstrahan ];
    };
  }
  
negative.code:   pythonVersion = majorVersion;
    inherit majorVersion version;
  
    buildInputs = optionals stdenv.isDarwin [ CF configd ];
  
    src = fetchurl {
      url = "http://www.python.org/ftp/python/${version}/Python-${fullVersion}.tar.xz";
      sha256 = "18kb5c29w04rj4gyz3jngm72sy8izfnbjlm6ajv6rv2m061d75x7";
    };
  
    NIX_LDFLAGS = optionalString stdenv.isLinux "-lgcc_s";
  
    prePatch = optionalString stdenv.isDarwin ''
      substituteInPlace configure --replace '`/usr/bin/arch`' '"i386"'
    '';
  
  