these 2 derivations will be built:
  /nix/store/fk2ifhkp165nh7k1g0zni6znlxjqy3hk-omo-ai-5.1.42.drv
  /nix/store/gifv3f812jwrn47lkzj0jfhymnc6m0j7-check-omo-ai.drv