daniel added a comment.
In https://phabricator.wikimedia.org/T101752#1350742, @JeroenDeDauw wrote:
3rd party wikis using Wikidata items as unit identifiers.
Can you be more specific? I'm guessing you are talking about third party
wikis running a Wikibase Repository, and have items in
mkroetzsch added a comment.
I think this is a useful change if you want Wikibase sites to be able to refer
to other Wikibase sites. In WDTK, all of our EntityId objects are external,
of course. A lesson learned for us was that it is not enough to know the base
URI in all cases. You sometimes
JeroenDeDauw added a comment.
Other than that, I can't think of any issues. EntityId is completely opaque.
While EntityId might not be explicitly providing certain guarantees, many users
of it can still make assumptions that would be violated when introducing this
new derivative. If the URL
