these 3 derivations will be built:
  /nix/store/6zarwk43a23r8f0lghj90bq7l59ad5m6-jcode-0.99.1-vendor.drv
  /nix/store/vwi3giixd7zbcfnwn6dhs3l4aqpyf4k3-jcode-0.99.1.drv
  /nix/store/74bhh71df1q9vksil7jllgmg2dv2pmhp-check-jcode.drv