this derivation will be built:
  /nix/store/8g06ar34bx7bv2910lbkn7x2hf979nkq-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/8g06ar34bx7bv2910lbkn7x2hf979nkq-bcachefs-module-7.0.0-39-generic.drv'...