Result of sudo apt-get install python-xy-meta-current:
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.