NixOS upgrade failure: 4 ways to find a culprit
TLDR; It can happen that during an update phase of your NixOS installation some package error arise from a package that is not directly mentionned in your system configuration. This blog post presents 4 ways to find where a dependency comes from when you find yourself in this position. The 4 ways described are: Relying on the --show-trace option of nixos-rebuild to get a more verbose output. Browsing the nixpkgs repository....