this derivation will be built:
  /nix/store/v9hwf70541jzyqq77w3vs79s7fh43bcm-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/v9hwf70541jzyqq77w3vs79s7fh43bcm-bcachefs-module-7.0.0-29-generic.drv'...