API Dump -- no way to set non-ENV options on Android
API Dump options are settable by using a vk_layer_settings.txt file, but a subset are also settable using environment variables. However, it appears that only the settings with corresponding environment variables can be set using setprop on Android.
This is indeed the case unfortunately. I noticed this discrepancy when I added other settings but didn't think much of it. This would be relatively straightforward to fix, just add new env-vars for each of the settings that don't currently have them.
Now that there is a programming interface: https://github.com/LunarG/VulkanTools/blob/98597f9b0a4cce30131a581ed56829f71d09193f/layersvt/test/test_api_dump.cpp#L43C4-L43C4
Wouldn't that be this most optimal path forward for Android?