comparison content/Coding/009-windows-trac-upgrade.rst @ 4:7ce6393e6d30

Adding converted blog posts from old blog.
author Brian Neal <bgneal@gmail.com>
date Thu, 30 Jan 2014 21:45:03 -0600
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1 Upgrading Trac on Windows Gotchas
2 #################################
3
4 :date: 2011-09-12 22:15
5 :tags: Python, Trac, Subversion, Windows
6 :slug: upgrading-trac-on-windows-gotchas
7 :author: Brian Neal
8
9 At work, we are outfitted with Windows servers. Despite this obstacle, I managed
10 to install Trac_ and Subversion_ a few years ago. During a break in the action,
11 we decided to update Subversion (SVN) and Trac. Since we are on Windows, this
12 means we have to rely on the `kindness of strangers`_ for Subversion binaries. I
13 ran into a couple of gotchas I'd like to document here to help anyone else who
14 runs into these.
15
16 I managed to get Subversion and Trac up and running without any real problems.
17 However when Trac needed to access SVN to display changesets or a timeline, for
18 example, I got an error:
19
20 ``tracerror: unsupported version control system "svn" no module named _fs``
21
22 After some googling, I finally found that this issue is `documented on the Trac
23 wiki`_, but it was kind of hard to find. To fix this problem, you have to rename
24 the Python SVN binding's DLLs to ``*.pyd``. Specifically, change the
25 ``libsvn/*.dll`` files to ``libsvn/*.pyd``, but don't change the name of
26 ``libsvn_swig_py-1.dll``. I'd really like to hear an explanation of why one
27 needs to do this. Why doesn't the Python-Windows build process do this for you?
28
29 The second problem I ran into dealt with mod_wsgi_ on Windows. Originally, a few
30 years ago, I setup Trac to run under mod_python_. mod_python has long been
31 out of favor, so I decided to cut over to mod_wsgi. On my Linux boxes, I always
32 run mod_wsgi in daemon mode. When I tried to configure this on Windows, Apache
33 complained about an unknown directive ``WSGIDaemonProcess``. It turns out that
34 `this mode is not supported on Windows`_. You'll have to use the embedded mode on
35 Windows.
36
37 .. _Trac: http://trac.edgewall.org/
38 .. _Subversion: http://subversion.apache.org/
39 .. _kindness of strangers: http://sourceforge.net/projects/win32svn/
40 .. _documented on the Trac wiki: http://trac.edgewall.org/wiki/TracSubversion
41 .. _mod_wsgi: http://code.google.com/p/modwsgi/
42 .. _mod_python: http://www.modpython.org/
43 .. _this mode is not supported on Windows: http://code.google.com/p/modwsgi/wiki/ConfigurationDirectives#WSGIDaemonProcess