this derivation will be built:
  /nix/store/mlgvpknigw56kis5qqprgnv8w4xc7y45-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/mlgvpknigw56kis5qqprgnv8w4xc7y45-bcachefs-module-7.0.0-38-generic.drv'...