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Note, the source package is "tox". Attempting backporting with:

 backportpackage -s raring -d precise -w workdir/ tox

Created a bunch of files:


$ ls -1
tox_1.4.2-2.debian.tar.gz
tox_1.4.2-2.dsc
tox_1.4.2-2~precise1.debian.tar.gz
tox_1.4.2-2~precise1.dsc
tox_1.4.2-2~precise1_source.build
tox_1.4.2-2~precise1_source.changes
tox_1.4.2-2~ubuntu12.04.1.debian.tar.gz
tox_1.4.2-2~ubuntu12.04.1.dsc
tox_1.4.2-2~ubuntu12.04.1_source.build
tox_1.4.2-2~ubuntu12.04.1_source.changes
tox_1.4.2.orig.tar.gz

rephrasing to backporting "tox" which is the source package providing "python-tox".

So that needs a bunch of other packages that need to be backported :(

The following packages have unmet dependencies:
 pbuilder-satisfydepends-dummy :

Depends: debhelper (>= 8) but it is not going to be installed
Depends: python-all but it is not going to be installed
Depends: python-argparse
Depends: python-doc but it is not going to be installed
Depends: python-pkg-resources but it is not going to be installed
Depends: python-py but it is not installable
Depends: python-pytest but it is not installable
Depends: python-setuptools but it is not going to be installed
Depends: python-sphinx (>= 1.0.7+dfsg) but it is not going to be installed
Depends: python-virtualenv but it is not installable

So maybe instead of backporting we could snapshot tox using pip install in a virtual environment.

With tox 1.5.0 :


The following packages have unmet dependencies:
 pbuilder-satisfydepends-dummy :
  Depends: python-pytest which is a virtual package.
  Depends: python-setuptools but it is not going to be installed.
  Depends: python-sphinx (>= 1.0.7+dfsg) but it is not going to be installed.
  Depends: python-virtualenv but it is not going to be installed.

Would need to backport python-pytest as well :/

Alternatively we could run tox commands on labs. Puppet knows how to fetch from pip and the following would work (tested on integration-pbuilder.pmtpa.wmflabs ):

$ cat pip.pp 
package { 'python-pip':
  ensure => present,
}

package { 'tox':
  ensure   => present,
  provider => 'pip',
  require  => Package['python-pip'],
}
$

# puppet apply pip.pp 
notice: /Stage[main]//Package[python-pip]/ensure: ensure changed 'purged' to 'present'
notice: /Stage[main]//Package[tox]/ensure: created
notice: Finished catalog run in 11.53 seconds
# 

$ which pip && pip --version
/usr/bin/pip
pip 1.0 from /usr/lib/python2.7/dist-packages (python 2.7)

$ which tox && tox --version
/usr/local/bin/tox
1.7.0 imported from /usr/local/lib/python2.7/dist-packages/tox/__init__.pyc
$

$ which virtualenv
/usr/local/bin/virtualenv
$ virtualenv --version
1.11.2
$


\O/

Change 111536 had a related patch set uploaded by Hashar:
contint: on slave labs, install tox from pip

https://gerrit.wikimedia.org/r/111536

Change 111536 merged by Alexandros Kosiaris:
contint: on slave labs, install tox from pip

https://gerrit.wikimedia.org/r/111536

Since backporting was too cumbersome, the pip option turned out to be an acceptable workaround.

pip / tox / virtualenv should now be installed on any instance having role::ci::slave::labs (i.e.: integration-slave01).

Such instances would need to be configured in Jenkins to have the 'hasTox' label for now.