[Bug 50136] New: allow to disable wine's vulkan loader/driver

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50136

Bug ID: 50136
           Summary: allow to disable wine's vulkan loader/driver
           Product: Wine
           Version: 5.21
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: winevulkan
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

I'm trying to run mesa's software vulkan renderer driver with wine.

This means I want to use vulkan's icd loader and mesa's renderer libs I built
(outside of wine):
libvulkan-1.dll
libvulkan_lvp.dll

Unfortunately, building wine with --disable-vulkan does not seem to disable its
loader, it only disables the driver:

$ VK_ICD_FILENAMES=lvp_icd.x86_64.json wine vkcubepp.exe
0064:err:vulkan:get_vulkan_driver Wine was built without Vulkan support.

Is there a way to disable the loader too ?