these 3 derivations will be built:
  /nix/store/qwb6517249w2csg8h580k567z34nwgmr-jcode-0.99.0-vendor.drv
  /nix/store/px2r09ymsdg794ahhksy1rpx06wgq4bg-jcode-0.99.0.drv
  /nix/store/w3i6jx0qbzksjwr0vdh54s3gpllnv521-check-jcode.drv