this derivation will be built:
  /nix/store/50mdsbw42mfjj48p6i8cxjkvba7agv9b-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/50mdsbw42mfjj48p6i8cxjkvba7agv9b-bcachefs-module-7.0.0-39-generic.drv'...