these 2 derivations will be built:
  /nix/store/r4ns712w79k8mzymia4nmk7ld7qgc7jq-hermes-virtio-gpu.drv
  /nix/store/8qdlisbl9a6l1zlm5ddl7d7zfgmnhkl5-hermes-virtio-gpu-test.drv