I'm hoping the upstream patches will be accepted, because they're pretty minimal/non-invasive (which you can see in the vendor diff). But figure we'll have to patch anyway because we're on an older version of buildkit.

But figure we'll have to patch anyway because we're on an older version of buildkit.

FWIW if the fork(s) become onerous to maintain, we could probably get most of the way there by using the existing Excludes field on SyncedDir. We'd have to populate from v1alpha1.IgnoreDef, which would require some care to avoid it kicking right back down the slow path, so it's not ideal for a variety of reasons

ya, it's tricky because ExcludePatterns MUST be relative to the context, so would need to do a fair bit of re-formatting