this derivation will be built:
  /nix/store/mn7qws69liljn6922ajvgqssb6g01lj5-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/mn7qws69liljn6922ajvgqssb6g01lj5-bcachefs-module-7.0.0-39-generic.drv'...