You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
PluginsArea: what it touches
ImprovementsKind: in v2.1.251,
ImprovementsSection of the release
What
Installing or linking a plugin now classifies an existing cached copy as in use by another session, safe to reuse as-is, or unclassifiable, and that decides whether the cache is reused or overwritten. An overwrite waits for other sessions to finish rather than pulling the directory out from under them.
Details
Removal logs say superseded when a newer version replaced the cache and incomplete when the previous write did not finish.
Always active for plugin installs; there is no flag.
Evidence
Removing ${qe || Ne ? "superseded" : "incomplete"} cache directory for ${t} at ${F}
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
