I've had Trac installed for some time, on my Gentoo powered server. I
believe my most recent update has broken something. I've managed to
figure it out when stuff like this has happened in the past (it's
distressingly often) but this time I'm completely stuck.
If I run trac-admin, I get:
$ trac-admin
Traceback (most recent call last):
File "/usr/bin/trac-admin", line 5, in <module>
from pkg_resources import load_entry_point
File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 2595,
in <module>
working_set.require(__requires__)
File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 621,
in require
needed = self.resolve(parse_requirements(requirements))
File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 519,
in resolve
raise DistributionNotFound(req) # XXX put more info here
pkg_resources.DistributionNotFound: setuptools>=0.6b1
But:
$ easy_install --version
distribute 0.6.4
It's very much installed and working. Is this the problem?
$ python
Python 2.6.2 (r262:71600, Oct 24 2009, 16:29:54)
[GCC 4.3.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import setuptools
>>> setuptools.__version__
'0.6'
I'd think "0.6" is newer than "0.6b1" (which I read as b1) but can
also see how it might fail such a check. Also, I know I have 0.6.4
installed, so that seems a bit strange.
Anyway, I only tried to run trac-admin because I was having more
serious problems, and wanted to try a fresh environment. In my
current environment, trying to access via the web, I just get a stack
trace:
Traceback (most recent call last):
File "/usr/lib/python2.6/site-packages/trac/web/api.py", line 377,
in send_error
'text/html')
File "/usr/lib/python2.6/site-packages/trac/web/chrome.py", line
726, in render_template
req.session.pop('chrome.%s.%d' % (type_, i)))
File "/usr/lib/python2.6/site-packages/trac/web/api.py", line 195,
in __getattr__
value = self.callbacks[name](self)
File "/usr/lib/python2.6/site-packages/trac/web/main.py", line 264,
in _get_session
return Session(self.env, req)
File "/usr/lib/python2.6/site-packages/trac/web/session.py", line
152, in __init__
self.get_session(sid)
File "/usr/lib/python2.6/site-packages/trac/web/session.py", line
173, in get_session
super(Session, self).get_session(sid, authenticated)
File "/usr/lib/python2.6/site-packages/trac/web/session.py", line
48, in get_session
db = self.env.get_db_cnx()
File "/usr/lib/python2.6/site-packages/trac/env.py", line 273, in
get_db_cnx
return DatabaseManager(self).get_connection()
File "/usr/lib/python2.6/site-packages/trac/db/api.py", line 85, in
get_connection
connector, args = self._get_connector()
File "/usr/lib/python2.6/site-packages/trac/db/api.py", line 130, in
_get_connector
raise TracError('Unsupported database type "%s"' % scheme)
TracError: Unsupported database type "mysql"
I have no idea why it might say that. I definitely have the requisite
packages installed.
$ python
Python 2.6.2 (r262:71600, Oct 24 2009, 16:29:54)
[GCC 4.3.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import MySQLdb
>>>
I debugged it for a while, and found that adding this line (to my
fastcgi wrapper script):
from trac.db import mysql_backend
Makes it load. But the navigation bar (normally: wiki, browser,
tickets, admin, etc) is completely empty. And the contents of the
page says:
Trac detected an internal error:
AttributeError: Cannot find an implementation of the "IRequestHandler"
interface named "WikiModule". Please update the option
trac.default_handler in trac.ini.
There was an internal error in Trac. It is recommended that you inform
your local Trac administrator and give him all the information he
needs to reproduce the issue.
To that end, you could ==== How to Reproduce ==== While doing a GET
operation on `/`, Trac issued an internal error. ''(please provide
additional details here)'' User Agent was: `Mozilla/5.0 (Windows; U;
Windows NT 5.1; en-US; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5 (.NET
CLR 3.5.30729)` ==== System Information ==== || '''Trac''' || `0.11.5`
|| || '''Python''' || `2.6.2 (r262:71600, Oct 24 2009, 16:29:54) `
[[br]] `[GCC 4.3.4]` || || '''setuptools''' || `0.6` || || '''MySQL'''
|| `server: "5.0.70", client: "5.0.70", thread-safe: 1` || ||
'''MySQLdb''' || `1.2.3c1` || || '''Genshi''' || `0.5.1` || ||
'''jQuery:''' || `1.2.6` || ==== Python Traceback ==== {{{ Traceback
(most recent call last): File "/usr/lib/python2.6/site-packages/trac/
web/main.py", line 444, in _dispatch_request dispatcher.dispatch(req)
File "/usr/lib/python2.6/site-packages/trac/web/main.py", line 171, in
dispatch chosen_handler = self.default_handler File "/usr/lib/
python2.6/site-packages/trac/config.py", line 498, in __get__
self.section, self.name)) AttributeError: Cannot find an
implementation of the "IRequestHandler" interface named "WikiModule".
Please update the option trac.default_handler in trac.ini. }}} a
ticket.
The action that triggered the error was:
GET: /
So then I added the line:
from trac.wiki import web_ui
Which convinces it to find the WikiModule, and Wiki pages show (and
'wiki' is in the nav bar). But the page says:
Warning: Can't synchronize with the repository (Unsupported version
control system "svn": Can't find an appropriate component, maybe the
corresponding plugin was not enabled? ). Look in the Trac log for more
information.
But again:
$ python
Python 2.6.2 (r262:71600, Oct 24 2009, 16:29:54)
[GCC 4.3.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import svn
>>> svn
<module 'svn' from '/usr/lib/python2.6/site-packages/svn/
__init__.pyc'>
>>>
I've got that and it works fine.
And in the wiki page, which used to work:
Error: Failed to load processor TitleIndex
No macro or processor named 'TitleIndex' found
Now, at the top, I mentioned an upgrade. I upgraded some packages on
Friday, but none of them were Trac. Trac has not been built since Oct
24, and it was Sep 23 when I upgraded from 0.11.2 to 0.11.5. These
problems have only been happening for about a day.
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