Nixos-rebuild keeps failing

[MrQubo]

There were some issues with the cache. It’s possible that your build is not stuck, but is building some package (which can last hours).

Nix refuses some packages from binary cache

My understanding is that uploading of new results is hopefully reliable now, and we did restart lots of failures where other package was failing to build due to such a missing binary (dependencies). But this approach doesn’t cover (all) leaf packages.