these 3 derivations will be built:
  /nix/store/mylapmcwa9lhr55mh1fpgmxl4aj3h7ys-ctx-2.2.8-vendor.drv
  /nix/store/7dryq89zdkblnqvjmypca1xglhrypm5v-ctx-2.2.8.drv
  /nix/store/qvbd9qysyrlf71y4mwh2jpbcsy5iya1v-check-ctx.drv