On Thu, Nov 22, 2018 at 12:32:14PM +0100, Marco d'Itri wrote:
I use merged-/usr without any issues on many stable systems, both new and upgraded.
Again, how many weren't systems you're responsible for? I have no doubt that you took care of the problems that you encountered personally when you wrote the tool. I've seen a lot of problems on systems in the wild that don't exist on my systems, but I don't expect that every one of our users is a debian developer; sometimes other people solve problems in a way that we didn't really expect or plan for them to.
Let's restate this so it can stand clearly on its own:"We ran into some unanticipated issues when we usrmerged our build systems, and we think the way to fix that is to force merge every one of our users' systems."