anchor.diff:      };
     });
   
  +  reportlab = 
  +   let freetype = pkgs.lib.overrideDerivation pkgs.freetype (args: { configureFlags = "--enable-static --enable-shared"; });
  +   in buildPythonPackage rec {
  +    name = "reportlab-2.5";
  +
  +    src = fetchurl {
  +      url = "http://pypi.python.org/packages/source/r/reportlab/${name}.tar.gz";
  +      md5 = "cdf8b87a6cf1501de1b0a8d341a217d3";
  +    };
  +
  +    buildInputs = [freetype];
  +    doCheck = false; 
  +
  +    meta = {
  +      description = "The ReportLab Toolkit. An Open Source Python library for generating PDFs and graphics.";
  +      homepage = http://www.reportlab.com/;
  +    };
  +  };
  +
     rdflib = buildPythonPackage (rec {
       name = "rdflib-3.0.0";
   
  
positive.code:   });
  
    numpy = buildPythonPackage ( rec {
      name = "numpy-1.4.1";
  
      src = fetchurl {
        url = "mirror://sourceforge/numpy/${name}.tar.gz";
        sha256 = "01lf3nc2lp1qkrqnnar50vb7i6y07d1zs6f9yc3kw4p5fd2vhyrf";
      };
  
      # TODO: add ATLAS=${pkgs.atlas}
      installCommand = ''
        export BLAS=${pkgs.blas} LAPACK=${pkgs.liblapack}
        python setup.py build --fcompiler="gnu95"
        python setup.py install --root="$out"
      '';
      doCheck = false;
  
  
negative.code:         };
        };
  
    pyreport = buildPythonPackage (rec {
      name = "pyreport-0.3.4c";
  
      src = fetchurl {
        url = "http://pypi.python.org/packages/source/p/pyreport/${name}.tar.gz";
        md5 = "3076164a7079891d149a23f9435581db";
      };
  
      doCheck = false;
  
      meta = {
        homepage = http://pypi.python.org/pypi/pyreport;
        license = "BSD";
        description = "Pyreport makes notes out of a python script.";
      };
    });
  
  
    pysqlite = buildPythonPackage (rec {
      name = "pysqlite-2.5.5";
  
  