Using 0.0.10 built from source, I get this output:
sumire@pop-os:~/Desktop/nvidia-vaapi-driver$ NVD_BACKEND=direct LIBVA_DRIVER_NAME=nvidia vainfoTrying display: waylandTrying display: x11
libva info: VA-API version 1.19.0
libva info: User environment variable requested driver 'nvidia'
libva info: Trying to open /run/opengl-driver/lib/dri/nvidia_drv_video.so
libva info: Trying to open /usr/lib/dri/nvidia_drv_video.so
libva info: Trying to open /usr/lib32/dri/nvidia_drv_video.so
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/nvidia_drv_video.so
libva error: dlopen of /usr/lib/x86_64-linux-gnu/dri/nvidia_drv_video.so failed: libEGL.so.1: cannot open shared object file: No such file or directory
libva info: Trying to open /usr/lib/i386-linux-gnu/dri/nvidia_drv_video.so
libva info: va_openDriver() returns -1
vaInitialize failed with error code -1 (unknown libva error),exit
Using 0.0.10 built from source, I get this output: