Many thanks for the replies. My problem is actually in accessing private methods/members of a struct defined in a different, but "very closely related" module. It seems @ nikomatsakis <https://github.com/nikomatsakis> is saying in the final text comment of https://github.com/mozilla/rust/issues/8215 that it is not possible to specify methods/members that are only accessible from within a small set of modules; they are either completely public, or private to a single module.
Looking at the same thread, I see nobody asked about a possibility of keeping the existing rules, but also adding a "friend" keyword at the module level; that is, if a module foo says "friend mod bar", then the module bar can access any private stuff in the module foo. I'm not very enamored of the friend keyword in C++, but it seems to me that having it only in module level greatly simplifies things. Also, in a Rust context, it seems it would cut down on much of the boilerplate code needed by barrier modules (which is not to say that re-exporting isn't a very useful feature as of itself). I don't want to re-open old discussions - is this something that was considered and rejected before?
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