It seems that all uses of `libva` it in nixpkgs except `mesa` and itself actually either will gain from using `libva-full` instead of `libva-minimal` by default or simply won't care.
It seems that all uses of `libva` it in nixpkgs except `mesa` and itself actually either will gain from using `libva-full` instead of `libva-minimal` by default or simply won't care.