these 2 derivations will be built:
  /nix/store/zji8xm8x4md9h4pdi7zc3v9y5290khnd-jscpd-5.1.1-vendor.drv
  /nix/store/npkdc9kqpizka6pv33n0887i7qpq74ys-jscpd-5.1.1.drv