Improve Trac error reporting for misconfigured repositories

[groovypockets@…]

Trying to setup Trac for subversion gui

here's the trace

Python Traceback

Traceback (most recent call last):
  File "/var/lib/python-support/python2.5/trac/web/main.py", line 406, in dispatch_request
    dispatcher.dispatch(req)
  File "/var/lib/python-support/python2.5/trac/web/main.py", line 191, in dispatch
    chosen_handler = self._pre_process_request(req, chosen_handler)
  File "/var/lib/python-support/python2.5/trac/web/main.py", line 263, in _pre_process_request
    chosen_handler = f.pre_process_request(req, chosen_handler)
  File "/var/lib/python-support/python2.5/trac/versioncontrol/api.py", line 73, in pre_process_request
    self.get_repository(req.authname).sync()
  File "/var/lib/python-support/python2.5/trac/versioncontrol/api.py", line 94, in get_repository
    ((self.repository_type,)*2))
TracError: Unsupported version control system "/var/svn/svpp". Check that the Python bindings for "/var/svn/svpp" are correctly installed.

[eblot]

Installation issue. Please re-read the TracInstall documentation or post to a message to the MailingList if you have trouble installing Trac.

[cboos]

Here the error was that the repository_type was set to a repository path. It should instead have been something like:

[trac]
repository_dir = /var/svn/svpp
repository_type = svn

I suggest to not delete the ticket as this might help someone having the same error message.

Also in 0.12, I will take a look at making the error messages for the versioncontrol subsystem more helpful, as this is by far the kind of reports we get the most. And it will get even worse with the multirepos support if nothing improves on that topic.

[cboos]

Provide a mechanism by which one can get (slightly) more meaningful messages for this common error

[cboos]

Tentatively scheduling this for 0.11 if there's positive review.

As said above, this error is by far one of the most common support request, so getting more detailed help message would be very useful.

Still, there's no magic in there and it won't tell exactly how one has managed to mess up the install, only provide useful hints (reporting the actual ImportError, telling to look in the Trac log, etc.).

[cboos]

Related changes for the TracMercurial plugin (0.11). I had to fight a bit the demandimport stuff ...

[Chris Mulligan <chris.mulligan@…>]

Closed dupe #5150.

[jonas]

I've applied the patches in r7435,7436 but I'm leaving the TracMercurial patch for you Christian since I can't really test it myself.