these 2 derivations will be built:
  /nix/store/g1y6pnbacyqplf4xvi8sqnmzqg8m57jv-herdr-app-0.1.13.drv
  /nix/store/k27z1108ch0xcmhfb46syspcnbk95c4h-check-herdr-app.drv