this derivation will be built:
  /nix/store/k8rf65s59hc55acj6hqvgpcqbd4pqpn1-bcachefs-module-7.0.0-27-generic.drv
building '/nix/store/k8rf65s59hc55acj6hqvgpcqbd4pqpn1-bcachefs-module-7.0.0-27-generic.drv'...