Comment by cb321

I am replying here as a kind of "better place to attach".

Anyway, to answer grandparent, I basically never had rebuild loops in 19 years.. just emerge -uU world every day or sometimes every week. I have been running the same base system since..let's see:

    qlop -tvm|h1
    2007-01-18T19:50:33 >>> x11-base/xorg-server-1.1.1-r4: 9m23s

I have never once had to rebuild the whole system from scratch in those 19 years. (I've just rsync'd the rootfs from machine to machine as I upgraded HW and gradually rebuilt because as many others here have said, for me it wasn't about "perf of everything" or some kind of reproducible system - "more customization + perf of some things".) The upgrade from monolithic X11 to split X11 was "fun", though. /s

I do engage in all sorts of package.mask/per-package use/many global use. I have my own portage/local overlay for things where I disagree with upstream. I even have an automated system to "patch" my disagreements in. E.g, I control how fast I upgrade my LLVM junk so I do it on my own timeline. Mostly I use gcc. I control that, too. Any really slow individual build, basically.

If over the decades, they ever did anything that made it look like crazy amounts of rebuilds would happen, I'd tend to wait a few days/week or so and then figure something out. If some new dependency brings in a mountain of crap, I usually figure out how to block that.