System-wide installation doesn't work

[John Beranek]

I:

1. Checked out the latest code from Subversion
2. Made an egg
3. Copied it into the system's site-packages directory
4. Added "wikitopdf.* = enabled" in the [components] section of a projects trac.ini

However, the plugin has not become enabled, and doesn't show in the Admin->Plugins page.

If I copy the egg into the project's 'plugins' directory, it works.

In the failure case there is nothing relevant in the trac.log file.

If I copy the egg file into the project's plugins directory, the trac.log file shows the plugin being loaded from the _system_ directory:

2010-04-26 14:59:33,832 Trac[loader] DEBUG: Loading wikitopdf.web_ui from /usr/lib/python2.4/site-packages/TracWikiToPdfPlugin-2.3.1-py2.4.egg

What's going on!?

[nathan r. hruby]

This appears to be caused by the lack of an __init__.py file in the wikitopdf module. You can maually add an empty one in the source directory and then reissue the build and install steps and it should work.

[Ryan J Ollos]

(In [9779]) Added __init__.py file to fix install failure. Removed requirement for htmldoc from setup.py since an install failed even when the package was installed system-wide. Fixes #7028.