I'm one of those potential upstreams. It's all OSS and I understand the pain of path dependency, so I don't think it would be fair to go out of my way to make a

I'm one of those potential upstreams. It's all OSS and I understand the pain of path dependency, so I don't think it would be fair to go out of my way to make any downstream distribution maintainer's life harder than necessary. At the same time, I suspect this kind of policy will make my life harder than necessary: users who hit bugs due to distribution packaging quirks will be redirected to me for triage, and I'll have a very hard time understanding (much less fixing) quirks that are tied to transitive subdependencies that my own builds intentionally exclude.