this derivation will be built:
  /nix/store/w3szd3b51zrsymbia7m3n5vbjhqv2h3b-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/w3szd3b51zrsymbia7m3n5vbjhqv2h3b-bcachefs-module-7.0.0-30-generic.drv'...