Path is not in the nix store during nixos-rebuild switch

[aiko]

What worked for me:

Issue building linux kernel modules after Flake update

I had the same error What in the end worked for me was to: upgrade Nix (see manual section 3.7) then upgrade the system one stable release at a time, rebooting in between 23.11 → 24.05 → 24.11 → 25.05 → …