Installing in Ubuntu 12.04

[Francisco Martinez]

When trying to install the package in Ubuntu 12.04, the following message appears:

The following packages have unmet dependencies:
  python-xy-meta-current: Depends: python-enthought-traits but it can not be installed
                           Depends: python-enthought-traits-ui but it can not be installed
                           Depends: python-traitsbackendqt but it will not be installed
                           Depends: python-traitsbackendwx but it will not be installed
                           Depends: python-traitsgui but it will not be installed
                           Depends: python-psyco but it can not be installed
E: Unable to correct problems, you have shelved (held) broken packages.

Timmie suggests this problem is due to a renaming:
http://packages.ubuntu.com/search?suite=raring&section=all&arch=any&keywords=traits+python&searchon=names

and recommends to commit a new version of the file
http://bazaar.launchpad.net/~pythonxy/pythonxy/python-xy-meta-current_debian/view/head:/control
with the corrections.