I'm not an RPM user (at least not for TDE) so I can't test, but looks to me that
the packages for Mageia8 are in the repo now (2021-Mar-02).
Felix (or an other Mageia user reading this message) if you have some spare time, would
you mind updating the wiki with the last available info?
https://wiki.trinitydesktop.org/Mageia_Trinity_Repository_Installation_Inst…
R14.0.6 vs R14.0.9, instructions for Mageai8, etc.