Currently there is not possiblility to get script path for the repository wiki belonging to a local wiki.
E.g. if bots want to modify local langlinks which are inlcuded from wikidata repository they do not know the url to use. Maybe this info can be added to qction=query&meta=siteinfo
For http://wikidata-test-client.wikimedia.de/w/api.php it is currently hard coded at my bot framework that http://wikidata-test-repo.wikimedia.de/w/api.php must be used. But on live wmf wikipedia wikis the repository url will be different.
Version: unspecified
Severity: enhancement