CentOS 6 and TRAC

[anonymous]

In trying to install TRAC on CentOS 6 I run into the following issue:

Traceback (most recent call last):
  File "setup.py", line 162, in <module>
    **extra
  File "/usr/lib64/python2.6/distutils/core.py", line 113, in setup
    _setup_distribution = dist = klass(attrs)
  File "/usr/lib/python2.6/site-packages/setuptools/dist.py", line 221, in __init__
    self.fetch_build_eggs(attrs.pop('setup_requires'))
  File "/usr/lib/python2.6/site-packages/setuptools/dist.py", line 245, in fetch_build_eggs
    parse_requirements(requires), installer=self.fetch_build_egg
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 550, in resolve
    raise VersionConflict(dist,req) # XXX put more info here
pkg_resources.VersionConflict: (Genshi 0.5.1 (/usr/lib64/python2.6/site-packages), Requirement.parse('Genshi>=0.6'))

Here's what installed default and by EPEL:

Installed Packages

python-genshi.x86_64                                        0.5.1-7.1.el6                              @base
python-genshi06.noarch                                      0.6-1.el6                                  @epel

So, the newer one is there. I removed the older one but the trac installer does not like the newer one and tries to install the old one then fails.

Is there a patch or something to resolve this?

[Ryan J Ollos]

IIRC, the Trac package in the official RHEL/CentOS6 provides Trac 0.12.x. Are you installing from an unofficial RPM, or are you installing from the source using setuptools?

[anonymous]

Actually I am using Virtualmin to download and install 1.01. They seem to have been unaware of the issue because it works on Ubuntu just fine. Their installer script installs the dependencies and then it executes the TRAC installer script. What I am not getting is why the TRAC side of it all does not recognize the newer genshi and fails. Do I need to ensure the older x86_64 version is gone first?

[Ryan J Ollos]

I am not sure. Having an older version of Genshi installed shouldn't be a problem if the newer version is also available in site-packages.

So I guess that Virtualmin is just a GUI for package management, among other things? You'll have better luck asking on the MailingList, as this is an InstallationIssue and not an issue with Trac itself.

However, I can offer you one hint. Open the python interpreter and type:

import genshi
genshi.__version__

If 0.5.1 i s printed, then 0.6 is not installed correctly. If 0.6 is printed, then I would guess that there is a problem with the Trac RPM you are installing.

[anonymous]

Fooling around I made a little progress.

in /usr/lib64/python2.6/site-packages I made 2 symlinks

ln -s /usr/share/doc/python-genshi06-0.6/examples/bench/genshi genshi
ln -s /usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/EGG-INFO Genshi-0.6-py2.6.egg-info

Now when running the VM installer I get:

Now installing Trac version 1.0.1 .. Project initialization install failed :
Initenv for '/home/datingchecklist/domains/tracker.datingchecklist.com/public_html/trac' failed.
Failed to create environment. unsupported operand type(s) for /: 'int' and 'NoneType'
Traceback (most recent call last):
File "/home/datingchecklist/domains/tracker.datingchecklist.com/public_html/lib/python/Trac-1.0.1-py2.6.egg/trac/admin/console.py", line 456, in do_initenv options=options)
File "/home/datingchecklist/domains/tracker.datingchecklist.com/public_html/lib/python/Trac-1.0.1-py2.6.egg/trac/core.py", line 124, in call self.init(*args, kwargs)
File "/home/datingchecklist/domains/tracker.datingchecklist.com/public_html/lib/python/Trac-1.0.1-py2.6.egg/trac/env.py", line 281, in init self.create(options)
File "/home/datingchecklist/domains/tracker.datingchecklist.com/public_html/lib/python/Trac-1.0.1-py2.6.egg/trac/env.py", line 584, in create DatabaseManager(self).init_db()
File "/home/datingchecklist/domains/tracker.datingchecklist.com/public_html/lib/python/Trac-1.0.1-py2.6.egg/trac/db/api.py", line 251, in init_db connector.init_db(args)
File "/home/datingchecklist/domains/tracker.datingchecklist.com/public_html/lib/python/Trac-1.0.1-py2.6.egg/trac/db/mysql_backend.py", line 117, in init_db for stmt in self.to_sql(table, utf8_size=utf8_size):
File "/home/datingchecklist/domains/tracker.datingchecklist.com/public_html/lib/python/Trac-1.0.1-py2.6.egg/trac/db/mysql_backend.py", line 166, in to_sql utf8_size=utf8_size))
File "/home/datingchecklist/domains/tracker.datingchecklist.com/public_html/lib/python/Trac-1.0.1-py2.6.egg/trac/db/mysql_backend.py", line 130, in _collist limit_col = 767 / utf8_size
TypeError: unsupported operand type(s) for /: 'int' and 'NoneType'
Creating and Initializing Project .. failed! See the error message above for the reason why.

[anonymous]

Per your suggestions:

[root@hosting2 site-packages]# python
Python 2.6.6 (r266:84292, Jan 22 2014, 09:42:36) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import genshi
genshi/__init__.py:24: UserWarning: Module genshi was already imported from genshi/__init__.pyc, but /usr/lib64/python2.6/site-packages is being added to sys.path
  from pkg_resources import get_distribution, ResolutionError
>>> genshi.__version__
'0.6'

[anonymous]

Attempting to force it again yields the following:

Project initialization install failed :
Initenv for '/home/datingchecklist/domains/tracker.datingchecklist.com/public_html/trac' failed. 
Does an environment already exist?

[Ryan J Ollos]

I guess you need to delete the environment directory /home/datingchecklist/domains/tracker.datingchecklist.com/public_html/trac.

[Jun Omae]

Now when running the VM installer I get:

...
File "/home/datingchecklist/domains/tracker.datingchecklist.com/public_html/lib/python/Trac-1.0.1-py2.6.egg/trac/db/mysql_backend.py", line 130, in _collist limit_col = 767 / utf8_size
TypeError: unsupported operand type(s) for /: 'int' and 'NoneType'
Creating and Initializing Project .. failed! See the error message above for the reason why.

It seems that your MySQL database is configured with non-utf8 charset. It must be configured with utf8 charset and utf8_bin collation or utf8mb4 and utf8mb4_bin. See MySqlDb#Requirements.

[anonymous]

I was finally able to get it to install but now I get this error from trac-admin:

# bin/trac-admin --help
Traceback (most recent call last):
  File "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 2655, in <module>
    working_set.require(__requires__)
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 648, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 546, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: Trac==1.0.1

Also too is in the web interface I get:

Warning: Can't synchronize with repository "(default)" (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.

[Ryan J Ollos]

Have you read TracInstall guide or one of the TracInstallPlatforms guides? For the latter problem (Can't synchronize with repository) you need to enable the component for the version control system you are using. You can enable the component through the plugin admin page.