this derivation will be built:
  /nix/store/frq30lgpzd88jqg9y5n97gp6d2v2d5w5-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/frq30lgpzd88jqg9y5n97gp6d2v2d5w5-bcachefs-module-7.0.0-39-generic.drv'...