Someone

class PythonBibtex(PackageRecipe):
    name = 'python-bibtex'
    version = '1.2.2'

    buildRequires = [ 'python-setuptools:python' ]

    def setup(r):
        r.addArchive('http://easynews.dl.sourceforge.net/sourceforge/pybliographer/'
                     '%(name)s-%(version)s.tar.gz')
        r.PythonSetup()