this derivation will be built:
  /nix/store/4x4mggfkfdff4ywynq1mb38aic9yja9a-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/4x4mggfkfdff4ywynq1mb38aic9yja9a-bcachefs-module-7.0.0-30-generic.drv'...