this derivation will be built:
  /nix/store/mjf5dkrfn6fslkcr69ajwkpbyiz688ck-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/mjf5dkrfn6fslkcr69ajwkpbyiz688ck-bcachefs-module-7.0.0-34-generic.drv'...