this derivation will be built:
  /nix/store/arnz8yny6whj4nkmyjwi85pz5yzrdya2-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/arnz8yny6whj4nkmyjwi85pz5yzrdya2-bcachefs-module-7.0.0-31-generic.drv'...