https://github.com/pantsbuild/pants/pull/8490#issuecomment-544306522 <= thoughts on whether we're able to remove

@union

at this point:

If it was possible to instead check "is there any path in the rule graph at all to fulfill this" (which is a superset of what

UnionMembership#is_member()

is doing), we might be able to rewrite lint and fmt as: ```

@console_rule def fmt(console: Console, targets: HydratedTargets) -> Fmt: results = yield [MaybeGet(FmtResult, target.adaptor) for target in targets] ... ```