this derivation will be built:
  /nix/store/js6ayjibsqw6wrirsvy2q663mp402kmm-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/js6ayjibsqw6wrirsvy2q663mp402kmm-bcachefs-module-7.0.0-30-generic.drv'...