these 5 derivations will be built:
  /nix/store/8cik8im7bh40sdg8vhg9b9ghfvrsy0qv-source.drv
  /nix/store/wd8dbdj4c01f59hdgpd6gby6ffani8dh-jcode-0.90.1-vendor-staging.drv
  /nix/store/0zzilasihi2x5mbvc1dsd1rw4za9fzmm-jcode-0.90.1-vendor.drv
  /nix/store/ngl6cd4qf36lfgf5mphh13ya9hg6pd84-jcode-0.90.1.drv
  /nix/store/ssi1b0kqli3q0kfqws0yb4096f3y0dfz-check-jcode.drv