Why? This below workaround make my software working again. I assume I must be missing something, otherwise I don't see the point of disabling packages without giving a command line switch to force a full install. (I did a quick search but I couldn't find a way to install without backing out the ignore switch) If this is just work-in-progress code feel free to ignore this email of course. Thanks. Index: setup.py =================================================================== --- setup.py (revision 12903) +++ setup.py (working copy) @@ -92,9 +92,9 @@ # build stuff packages=dist.getPackages(util.sibpath(__file__, 'twisted'), - ignore=dist.twisted_subprojects), + ignore=()), data_files=dist.getDataFiles(util.sibpath(__file__, 'twisted'), - ignore=dist.twisted_subprojects), + ignore=()), detectExtensions=detectExtensions, scripts= [ 'bin/manhole', 'bin/mktap', 'bin/twistd',