this derivation will be built:
  /nix/store/jv2500kxrcv9q434b5r9z4md6mkhrdrp-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/jv2500kxrcv9q434b5r9z4md6mkhrdrp-bcachefs-module-7.0.0-39-generic.drv'...