Okie dokie, tracked it down to libxkbcommon (didn't realize that'd load up on its own), which is not installed by default and still early enough on in development that this error message is not worth silencing.
Okie dokie, tracked it down to libxkbcommon (didn't realize that'd load up on its own), which is not installed by default and still early enough on in development that this error message is not worth silencing.