Comment # 1 on bug 1219590 from Stefan Dirsch

Not sure what's wrong here ...

# rpm -qpl nvidia-gl-G06-545.29.06-19.3.x86_64.rpm | grep vulkan
[...]
/etc/vulkan
/etc/vulkan/icd.d
/etc/vulkan/icd.d/nvidia_icd.json
/etc/vulkan/implicit_layer.d
/etc/vulkan/implicit_layer.d/nvidia_layers.json

# cat NVIDIA-Linux-x86_64-545.29.06/README.txt
[...]
     The Vulkan ICD configuration file is installed as
     '/etc/vulkan/icd.d/nvidia_icd.json'.

     An additional Vulkan layer configuration file is installed as
     '/etc/vulkan/implicit_layer.d/nvidia_layers.json'. These layers add
     functionality to the Vulkan loader.
[...]

Don't know why "$VK_ICD_FILENAMES needs to be set ...