Fix: Send Content-Length header to client from top Exception handler The top exception handler in run_cgi wasn't sending the Content-Length header for the error message. This resulted in a hung client. Probably wasn't an issue with http 1.0, but when using 1.1 it's required.

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

class install_lib(base):

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