commit e156996c478a8e5d040ccf199437bcdbdbab63ed in vulkan-tools makes it 
use volk to load vulkan instead of a bunch of custom code in the repo.
volk uses dlopen("libvulkan.so.1").
i dont remember volk ever working, so this just propagated the bug to 
another program.
attached is a patch to hard-code the libvulkan.so path into volk.

vulkan-headers also has dlopen for libvulkan.so.
i dont know which programs use it, but next time we have to rebuild 
everything we may as well patch it.
i attached a patch that shows how to do it.