these 3 derivations will be built:
  /nix/store/cpahqvryl67q3iyq2w6q0fhzxbznvjsg-ctx-2.2.4-vendor.drv
  /nix/store/0mcwq3ik44scxf4y2wc6qv2wis540rc7-ctx-2.2.4.drv
  /nix/store/xxsgv1lz4g4iw31p6cmyixhhm6jhfm0r-check-ctx.drv