Trac 0.11.7 incompatibility with Genshi 0.6

[Sascha Kratky <kratky@…>]

Since upgrading to Genshi 0.6, Trac 0.11.7 always raises the following error upon sending notification emails (Traceback enabled):

2010-05-04 14:55:04,961 Trac[web_ui] ERROR: Failure sending notification on change to ticket #2607: 
Traceback (most recent call last):
  File "/Library/Python/2.6/site-packages/Trac-0.11.7-py2.6.egg/trac/ticket/web_ui.py", line 1037, in _do_save
    tn.notify(ticket, newticket=False, modtime=now)
  File "/Library/Python/2.6/site-packages/Trac-0.11.7-py2.6.egg/trac/ticket/notification.py", line 142, in notify
    subject = self.format_subj(summary)
  File "/Library/Python/2.6/site-packages/Trac-0.11.7-py2.6.egg/trac/ticket/notification.py", line 219, in format_subj
    template = TextTemplate(template.encode('utf8'))
  File "build/bdist.macosx-10.6-universal/egg/genshi/template/base.py", line 398, in __init__
    self._init_loader()
  File "build/bdist.macosx-10.6-universal/egg/genshi/template/base.py", line 437, in _init_loader
    self.loader = TemplateLoader([os.path.abspath(basedir)])
  File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/posixpath.py", line 337, in abspath
    path = join(os.getcwd(), path)
OSError: (13, 'Permission denied')

In my trac.ini file I am using the following setting for ticket_subject_template.

ticket_subject_template = $prefix #$ticket.id: $summary

After reverting to Genshi 0.5.1 the problem goes away.

Using Trac 0.11.7, Python 2.6.1, Apache/2.2.14, mod_wsgi 3.2, Mac OS X Server 10.6.3.

[Christian Boos]

The fact that os.getcwd() triggers a "Permission denied" sounds like an InstallationIssue to me… Try changing the working directory from where Trac is started (httpd -d ..., ServerRoot directive, …).

I'm not sure we can do much about this, at best it's a Genshi issue, if there's a difference between 0.5.1 and 0.6.

Besides, there's no reason to switch to Genshi 0.6 if you're using only Trac 0.11.x, but for most users (including here on edgewall.org), this combination work (e.g. ​Bitten, [Babel:] and ​Genshi instances). So if Genshi 0.5.1 works for you, don't upgrade, it's fine like that.

If the problem happens when running Trac 0.12, it's unfortunately much more problematic as in this case Genshi 0.6 is required, but it's not less an InstallationIssue…