hello_xr VkResult failure

[NerveCoordinator]

After following these instructions to compile Monado as a runtime for openxr. As I noted there, I used vulkan-devel from the AUR in arch linux. I have gotten the following error when trying to run hello_xr with Vulkan:

VkResult failure [ERROR_EXTENSION_NOT_PRESENT]
    Origin: vkCreateInstance(&instInfo, nullptr, &m_vkInstance)
    Source: /home/sonata/mon/src/OpenXR-SDK/src/tests/hello_xr/graphicsplugin_vulkan.cpp:1154

Using -g openGL

compositor_check_vulkan_caps - Failed to create VkInstance: VK_ERROR_EXTENSION_NOT_PRESENT
XR_ERROR_INITIALIZATION_FAILED in xrCreateSession:  failed create a compositor
[12:21:27.946][Error  ] XrResult failure [-6]
    Origin: xrCreateSession(m_instance, &createInfo, &m_session)
    Source: /home/sonata/programs/git_repos/OpenXR-SDK/src/tests/hello_xr/openxr_program.cpp:367

Also of note is that if I follow the OpenXR build instructions here then when trying to run hello_xr I get a different error:

[12:24:08.306][Error  ] Unsupported graphics API 'Vulkan'

[NerveCoordinator]

Oh this is actually not an OpenXR issue at all!
Running vulkaninfo I got:

vulkaninfo
ERROR: [Loader Message] Code 0 : /usr/lib32/libvulkan_radeon.so: wrong ELF class: ELFCLASS32
ERROR: [Loader Message] Code 0 : libLLVM-8.so: cannot open shared object file: No such file or directory
Cannot create Vulkan instance.
/build/vulkan-tools/src/Vulkan-Tools-1.1.102/vulkaninfo/vulkaninfo.c:894: failed with VK_ERROR_INCOMPATIBLE_DRIVER

So the issue is entirely with my drivers.