Comment 2 for bug 514557

Not too trivial.

IIRC the brainstorm on IRC lead to the following workflow:
* find appropriate package for file...
** dpkg -S the package
** check for package-dbg
** else resolve source package name
** check for source_package-dbg
--
* check if -dbg installable
** true -> install
* check if ddeb repository is activated in sources.list
** true -> update -> check if available and install if so -> otherwise go whine about missing dbg package
* add ddeb repo -> update -> check for -dbg
** true -> install

If package can not be found in regular archives or ddeb the script will have to complain.

Further considerations:
* does Qt have a standard -dbg name yet? (earlier it used qt-debug or something)