this derivation will be built:
  /nix/store/400vnxxwf7fmza2ffm71rx1dsd8lk44z-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/400vnxxwf7fmza2ffm71rx1dsd8lk44z-bcachefs-module-7.0.0-29-generic.drv'...