this derivation will be built:
  /nix/store/xn8j921a01gzi5i9yrvyvy73s24wgi6g-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/xn8j921a01gzi5i9yrvyvy73s24wgi6g-bcachefs-module-7.0.0-31-generic.drv'...