https://bugs.winehq.org/show_bug.cgi?id=44775
--- Comment #20 from Józef Kucia joseph.kucia@gmail.com --- (In reply to Robert Walker from comment #19)
/opt/wine-devel/lib64/wine/fakedlls/winevulkan.dll /opt/wine-devel/lib64/wine/winevulkan.dll.so /opt/wine-devel/lib/wine/fakedlls/winevulkan.dll /opt/wine-devel/lib/wine/winevulkan.dll.so
So the package was definitely built with the --with-vulkan configure option enabled and the development libraries installed.
winevulkan.dll is built even with the --without-vulkan option