Bug#842571: transition: tango
I would like to start the tango transition tango8 -> tango9
This is required in order to have tango into Stretch (it add the MariaDB support).
You can find here  that there is only one dependency "pytango" for which I am also the maintainer.
this package was already rebuilt in experimental.
So all reverse depdency are ready for the migration from the tango point of view
Except that this transition require the ipython one before.
Inddeed the new pytango 9.x added a dependency to python-itango which depends on python-qtconsole.
thanks for considering
I would take the one from 
-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 4.7.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)