We currently require the validation layer in the vulkan renderer. If that is not installed, creating the renderer fails. While the validation layer is useful at the moment we probably don't want to abort because it's not installed and (sooner or later) we should disable it by default as it has a significant performance impact.

See 8e34692#commitcomment-58239638

wlroots has migrated to gitlab.freedesktop.org. This issue has been moved to:

https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3283