this derivation will be built:
  /nix/store/7h42223g7vraq6g22m036knyy84hdb8l-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/7h42223g7vraq6g22m036knyy84hdb8l-bcachefs-module-7.0.0-29-generic.drv'...