after some discussion with <@U6YPB4SJX> in <https:...
# development
after some discussion with @average-vr-56795 in, we think one way to achieve the SnapshotSubset optimization would be:
exposing some API in Pants to add or remove specific files, or entire directories
and doing this in a way that takes advantage of the locality of directory nodes to make this a fast operation, and then building globbing on top of that