I spoke with a few people at DebConf and now understand this problem and the workarounds better. It's due to a quirk of QuodLibet's plugins layout, which should be changed to be more standard upstream. Since it is probably too difficult for python-support to detect all corner cases when generating __init__.py in order to fail in a better way to help maintainers find the problem, I'll just close this bug as invalid.
I'm planning on switching quodlibet back to python-support in a future version (already have a working package that uses it again locally). later, Christine -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org