## page was renamed from DistUtilsExtensions/SpecFileManipulation
This extension of the `bdist_rpm` command shows how to modify the SPEC file before it is passed to the `RPM` shell command. It makes the Python version used to call "setup.py" known within the spec file, and also sets another prefix for the install step.

Note that you can use `pre_install` and `post_install` in your "setup.cfg" to add customized `%pre` and `%post` sections (those settings contain the names of files that are then appended to the SPEC file).

{{{
#!python
class bdist_rpm_ext(bdist_rpm):
    """ Überladung von bdist_rpm, um das SPEC-File etwas zu erweitern.
    """

    def _make_spec_file(self):
        spec_file = bdist_rpm._make_spec_file(self)
        spec_file[0:0] = [
            '%define pyversion ' + sys.version[:3],
        ]

        install = spec_file.index('%install')
        spec_file[install+1] = spec_file[install+1].replace(
            'setup.py install',
            'setup.py install --prefix /opt/%{name}/%{version}')

        return spec_file
}}}