Bug#859780: debian-edu: remove education-lang-??-desktop-kde metapackages for Buster
> I might miss something, but as far as I can the education-lang-??-desktop-kde
> packages are completly useless?
I am confused by your finding here. When Mike removed the tasks in commit
75cb6e786bf9f0ffcdb70017387b884c9dc7fb91, the following recommended packages
from the tasks were droped: kde-l10n-da, kde-l10n-de, kde-l10n-es, kde-l10n-fr,
kde-l10n-he, kde-l10n-it, kde-l10n-ja, kde-l10n-nn, kde-l10n-nb and kde-l10n-zhtw.
This make me suspect that the tasks are not useless, and is used to make sure
the required translation packages are installed by d-i.
I guess it will become obvious during testing when installing Chinese or Danish
KDE. If the KDE desktop is translated after installataion, it still work as it