Some backends are read-only (e.g. Zip) or don't support certain operations (like link). Rather than just use CopyOnWrite to make the tests work, we should programmatically skip tests that use features the backend doesn't support. This is a long-term goal, since the current approach works good enough.
Some backends are read-only (e.g.
Zip) or don't support certain operations (likelink). Rather than just useCopyOnWriteto make the tests work, we should programmatically skip tests that use features the backend doesn't support. This is a long-term goal, since the current approach works good enough.