Comment 1 for bug 266448

Originator: NO

This is a bug in newlist fixed by the attached patch which will be in
Mailman 2.1.10.

The patch will add the selected language to available_languages if it is
other than the server default language.

As far as the Debian installation scripts logic is concerned, this is not
something that the Mailman project has any control over, but I must not
understand correctly in any case. It seems that you are saying that the
package will not install any templates or message catalogs for languages
that are not listed in available_languages of the existing lists, but this
would result in a new installation containg support for only those
languages listed as available for the packaged site list if that, so you
must be saying something else.
File Added: newlist.patch