this derivation will be built:
  /nix/store/l9p3hb4qpqqxq2xp3wllqizf910dx55j-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/l9p3hb4qpqqxq2xp3wllqizf910dx55j-bcachefs-module-7.0.0-39-generic.drv'...