After the installing Solus 4.2 and selecting German for my language, language pack installation is incomplete.
Many parts of the UI / many applications are still in English.
Same thing happens in Ubuntu and Manjaro. In these distributions there is a global language setting tool, that offers to install missing packages, when opened.
I tried to find the same in Solus, but there is only a dialogue in Gnome Settings, that doesn't care about missing packages.