this derivation will be built:
  /nix/store/2l51cxhiil935h366k7nyjkrx2yq2ckd-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/2l51cxhiil935h366k7nyjkrx2yq2ckd-bcachefs-module-7.0.0-39-generic.drv'...