these 3 derivations will be built:
  /nix/store/ha0ivanad1y81xs0lkb2704rv6imjw1w-ctx-2.2.3-vendor.drv
  /nix/store/ryzw6pf40hb75wyqp2bpii89bdchkz0n-ctx-2.2.3.drv
  /nix/store/zxclybjrwfhx83i55mx39vh381zc23gj-check-ctx.drv