It gets worse when you are not a solo dev, and there's sufficient variety on people's setups. Oops, someone updated a version, and then built things for just their processor, and now I am stuck in a 20 minute compilation loop because some bad pin. Debugging Nix problems like those makes me think that old Gentoo Linux back in 2005 was easy and user friendly.

The way I set it up at my shop was that everything would build on your PR, and so by the time it merged, everything was already cached and no one should see a rebuild... at most a download.

Ha that is very funny. I also started thinking about Gentoo a lot as well which was a sanity check moment … “even Gentoo was easier than this” etc.