changeset link in the repository browser results in trac internal error

[joel maizi]

Binary package hint: trac-mercurial

Release: 10.04
Codename: lucid

$ dpkg -l | grep mercurial
ii mercurial 1.4.3-1 scalable distributed version control system
ii mercurial-common 1.4.3-1 scalable distributed version control system
ii trac-mercurial 0.11.0.7+svnr8365-2 Mercurial version control backend for Trac
$ dpkg -l | grep trac
[...]
ii trac-mercurial 0.11.0.7+svnr8365-2 Mercurial version control backend for Trac

I've just upgraded from karmic to lucid and I have a problem when I click on the changeset link in the repository browser:

    Trac detected an internal error:
    TypeError: walkchangerevs() takes exactly 4 arguments (5 given)

I found the same problem reported on https://bugzilla.redhat.com/show_bug.cgi?id=574854.

[joel maizi (joel-maizi)]

a quick replacement of /usr/lib/pymodules/python2.6/tracext/hg/backend.py with http://trac.edgewall.org/browser/plugins/0.11/mercurial-plugin/tracext/hg/backend.py?rev=9601 fixed the problem.

[odd parity (oddparity)]

I have the same problem - it's fixed in TracMercurial 0.11.0.8, so it should just be a matter of packaging a later version.

See also http://trac.edgewall.org/ticket/8897

[Maarten Bezemer (veger)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner.
Both Oneiric and Precise have a newer version (than 0.11.0.8) and should fix the issue.
It would help us a lot if you could test it on a currently supported Ubuntu version. When you test it and it is still an issue, kindly upload the updated logs by running apport-collect 572935 and any other logs that are relevant for this particular issue.

[Maarten Bezemer (veger)]

Found Debian report (closer to the Ubuntu package)