Test case for backend not defined; remove unreachable code Verify that error is raised in configuration.py if backend is not defined in config.ini. Remove unreachable code from instance.py that detects that backend is not defined. It hasn't been reachable since version 1.6.1 because the configuration.py module made the backend option mandatory. Hence configuration.py raises the error and never passes control back to the unreachable code.

from roundup.dist.command.build import build_message_files, check_manifest
from distutils.command.install_lib import install_lib as base

class install_lib(base):

    def run(self):
        check_manifest()
        build_message_files(self)
        base.run(self)