these 3 derivations will be built:
  /nix/store/8pyfrc2z23zha7na2ahv70maj7bfrym5-ctx-2.2.8-vendor.drv
  /nix/store/8mhzw4rcc0ksk88h0hw34g4j9bzpnlyz-ctx-2.2.8.drv
  /nix/store/xjxp3fbkgmk0g6h3194szj1aqsg49njs-check-ctx.drv