Hi!
Thanks for filling Repology names all over Wikidata!
After some fixes I've made here (removed some incorrect properties and split some entries which referred to multiple projects at once) and in Repology (added some missing project merges) it looks like Repology can be switched to using P:P6931 instead of Arch/AUR package names to match Wikidata entries to its projects. Currently there are also more entries with P:P6931 filled (1999) than with Arch/AUR packages (1271) so it'll also increase coverage. However not all entries with packages have Repology names filled yet, so switching now would cause some entries to disappear. Since you're adding P6931s you'd probably be interested in filling the remaining ones. If you need any data for that, feel free to ask me. I've created Wikidata:Partnerships and data imports to discuss that, but haven't got any feedback yet.