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Recenlty I was in need to update a old subversion server to latest one in a CentOS 5.2 box. I removed the older rpms and compiled subversion from latest source. Everything seems fine except ViewVC which is used to browse svn repositories.

Following error was occuring:

An Exception Has Occurred
Python Traceback

Traceback (most recent call last):
File “/usr/local/viewvc-1.1/lib/viewvc.py”, line 4065, in main
request.run_viewvc()
File “/usr/local/viewvc-1.1/lib/viewvc.py”, line 403, in run_viewvc
self.view_func(self)
File “/usr/local/viewvc-1.1/lib/viewvc.py”, line 1662, in view_roots
allroots = list_roots(request)
File “/usr/local/viewvc-1.1/lib/viewvc.py”, line 3922, in list_roots
cfg.utilities, cfg.options.svn_config_dir)
File “/usr/local/viewvc-1.1/lib/vclib/svn/__init__.py”, line 53, in SubversionRepository
import svn_repos
File “/usr/local/viewvc-1.1/lib/vclib/svn/svn_repos.py”, line 25, in ?
from svn import fs, repos, core, client, delta
ImportError: No module named svn

Updated on April 24th, 2009.
ViewVC is a Subversion repository browser software having many useful features. You need python and a web browser to run it. If you are maintaining a Subversion server, you should install it to view repositories, files, branches, directories, versions or comparison between versions.

Step 1. Get the latest version of viewvc from here, when writing of this article the latest version was 1.2-dev. I’m using the development branch, you can use more stable. Untar it and start installation:

# tar xzf viewvc-1.2-dev.tar.gz
# cd viewvc-1.2-dev
# ./viewvc-install