these 3 derivations will be built:
  /nix/store/yyl6kvknv878z016qa01rql5yy9gp47x-jcode-0.99.1-vendor.drv
  /nix/store/2zhc9iz6xsbwhwpbmrqkpjj0k570hh67-jcode-0.99.1.drv
  /nix/store/r041kjl9znbiz87x2lyaryc35py7q83z-check-jcode.drv