This is my experience too. At scale, I find Nix to be really slow, and the remote building infrastructure over VPN to be very flakey (see what I did there?).

This is my experience too. At scale, I find Nix to be really slow, and the remote building infrastructure over VPN to be very flakey (see what I did there?). But it does solve some tough problems, and also introduces some new ones. Nix is incredibly useful, and extremely frustrating at the same time. Also, disk space...