these 2 derivations will be built:
  /nix/store/x6nabdxhskfgcac7z5zk81crxj8xgbx2-opencode2-2.0.22.drv
  /nix/store/lxdvd7wr3cysl805h0i29l8qgixbm2p5-check-opencode2.drv