If we wanted to refer (such as by link, or in search results, or any other way) to a certain Wikimedia project (such as German Wikipedia or Italian WikiNews) we need an ability to figure out what the name of the project is, automatically, and be able to translate it into user's content language for display.
Current proposed solution, provided it turns out we do not have such list:
- Create a set of messages in WikimediaMessages extension with pattern name like interwiki-name-enwiki, interwiki-name-itwikisource, etc.
- Initialize these messages from Wikidata labels in English
- Import other labels for the same projects in other languages into respective language translations
- Incrementally work to improve the translations/coverage so every project has a proper name in every language