these 5 derivations will be built:
  /nix/store/8zx9vllgdihf5w017vp9s8v48xpafzxk-source.drv
  /nix/store/0hwcmfym6bl1nvkcxzl6awizi0b86idw-ctx-2.0.0-vendor-staging.drv
  /nix/store/aqngp7fx2clmzp2hz86c4h7b7cpz4sl1-ctx-2.0.0-vendor.drv
  /nix/store/8xbwklhf0ibkc2kdq35apxhiyfdrs9qa-ctx-2.0.0.drv
  /nix/store/49sqyr160bvyqd96j5aipm71xwq9zz5b-check-ctx.drv