existing dependency on elementree at python level

[Markus Korn]

Impact: Python code using pkg_resources where the code uses wadllib (or
    launchpadlib) will spuriosly fail, causing problems in other packages.
Development fix: cjwatson is fixing as part of his Python 3 port.
Stable fix: drop the requirement from the requires.txt, as it is not doing anything
   and only breaking code. elementtree is merged in to Python as of 2.6, and having
   then entry won't change what is installed on Ubuntu.
Test case:
    1. Install python-wadllib from lucid.
    2. Check that "elementtree" is listed in /usr/share/pyshared/wadllib-1.1.4.egg-info/requires.txt
    3. Install python-wadllib from lucid-proposed
    4. Check that "elementtree" is no-longer listed in /usr/share/pyshared/wadllib-1.1.4.egg-info/requires.txt
Regression potential: very low, as the line was redundant.

Binary package hint: python-wadllib

With the python-wadllib in maverick installed, the following code fails:

Python 2.6.6 (r266:84292, Sep 15 2010, 16:22:56)
[GCC 4.4.5] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from pkg_resources import require
>>> require("wadllib")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 654, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 552, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: elementtree
>>>

It is because `/usr/share/pyshared/wadllib-1.1.4.egg-info/requires.txt` contains `elementtree`, but in fact `elementree` is not used when the user is using python >= 2.5

[Luca Falavigna (dktrkranz)]

Fixed in 1.1.8+ds-1

[Luca Falavigna (dktrkranz)]

Well, actually no. Reopen.

[Martin Pitt (pitti)]

Needs fixing in precise first before this can be SRUed.

[Robert Collins (lifeless)]

Also I suspect we need to do a release :).

[James Westby (james-w)]

rick_h did a release with this in it last week. Barry is going to upload to Precise.

Thanks,

James

[Martin Pitt (pitti)]

Seems this fix was part of http://launchpadlibrarian.net/91483771/python-wadllib_1.2.0%2Bds-2build1_1.3.0-0ubuntu1.diff.gz

[Martin Pitt (pitti)]

Hello Markus, or anyone else affected,

Accepted python-wadllib into lucid-proposed. The package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

[Bartosz Kosiorek (gang65)]

I installed this package from proposed, and there is no dependency from elementtree:

setuptools
lazr.uri
simplejson

[docs]
Sphinx
z3c.recipe.sphinxdoc

Vrification done.

[Launchpad Janitor (janitor)]

This bug was fixed in the package python-wadllib - 1.1.4-1ubuntu1.1

---------------
python-wadllib (1.1.4-1ubuntu1.1) lucid-proposed; urgency=low

  * Removed dependency on elementtree from the egg-info dir as it is part of
    python from 2.6 onwards. The package doesn't depend on it anyway, so
    it won't make a difference to what is installed. (LP: #681394)
    .
    Having it listed in requires.txt meant that pkg_resources would error out
    when used with anything that depends on python-wadllib, breaking other
    software without cause.
 -- James Westby <email address hidden> Wed, 18 Jan 2012 11:18:05 -0500