these 3 derivations will be built:
  /nix/store/3bcv1q90i1h4xlrkpq75qgqp8303gj4m-ctx-2.2.8-vendor.drv
  /nix/store/hbh84w7sb5d7ngaddk3bj75s67lc6dgn-ctx-2.2.8.drv
  /nix/store/x272nky2xqcdq78ja23wdrmz8xycf9y5-check-ctx.drv