this derivation will be built:
  /nix/store/x2sslj5gjvs50mk485xxj55vc0978nxh-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/x2sslj5gjvs50mk485xxj55vc0978nxh-bcachefs-module-7.0.0-31-generic.drv'...