these 3 derivations will be built:
  /nix/store/nwxyyfa8ccfmgcalb9kimwhg3zr35kwm-jcode-0.99.1-vendor.drv
  /nix/store/9fv0csl9ykr808l0v7206kcg9igj8q8n-jcode-0.99.1.drv
  /nix/store/v329nf79xqy9f877z4faqd7iikl6931f-check-jcode.drv