I think it’s best to get out of that cycle and force your body to wake up at the first alarm. Otherwise you’re just wasting time on nothing - your brain doesn’t rest properly in those 5-minute doses and you’re not getting ready either. The way I’m doing it is to put my phone in a different room next to my bedroom so that I have to get out of bed to turn off the alarm. If you’re managing to sleep through alarms it’s probably not the solution for you, so maybe the QRAlarm recommendation made elsewhere in the thread is better.

They only dedup runtimes, not individual dependencies.

Not sure I follow you entirely, but I think we agree.

No, not quite. Flatpak is containers - it just stuffs every dependency that an application needs in a directory with no way to deduplicate or update independently. Gobo is a bit more nuanced, since dependencies are shared between applications when the versions match.

I think the main premise is that every version of every software has its own installation prefix. This allows you to mix&match different versions, perform atomic upgrades, etc. You can think of it as a proto-Nix. TBH I don’t see much point in it now that Nix(OS) and Guix exist, or, if you don’t like their purity, stal/IX.