this derivation will be built:
  /nix/store/fmlyhb0n0gvy2fs986x9m45ibpk7ars6-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/fmlyhb0n0gvy2fs986x9m45ibpk7ars6-bcachefs-module-7.0.0-38-generic.drv'...