Package: nvidia-vulkan-icd Severity: important nvidia-vulkan-icd currently Recommends libnvidia-rtcore on the architectures where it exists.
According to Nvidia developers who I spoke to during my work on the Steam Runtime, the 64-bit Vulkan driver is not meant to be run in production without libnvidia-rtcore: even if some basic functionality might work without it, that setup isn't tested or supported. They say that a Recommends is not really strong enough here, and it should be a Depends. https://github.com/ValveSoftware/Dota-2/issues/2787 is an example of a game that does not work correctly (at least on newer GPUs) without libnvidia-rtcore being installed. Thanks, smcv
