> Once a language support is installed once, it could have an option that it checks e.g.
> monthly whether new packages are installed which need language support and ask
> user whether they should be installed.
It's bad idea. If I install new software I want it to be in language I specified with the first start of this app, not in a month.
> Alternatively solution would be an apt hook that checks new packages against a list
> of packages which need locale specific language pack and which would install the selected
> locale(s) package for them automatically.
IMHO it would be the best option in the long term.
> Once a language support is installed once, it could have an option that it checks e.g.
> monthly whether new packages are installed which need language support and ask
> user whether they should be installed.
It's bad idea. If I install new software I want it to be in language I specified with the first start of this app, not in a month.
> Alternatively solution would be an apt hook that checks new packages against a list
> of packages which need locale specific language pack and which would install the selected
> locale(s) package for them automatically.
IMHO it would be the best option in the long term.