tce-load -i compiletc rust git gst-plugins-base-dev gtk4-dev

wget https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/archive/gstreamer-1.26.1/gst-plugins-rs-gstreamer-1.26.1.tar.bz2

cd gst-plugins-rs-gstreamer-1.26.1

cd video/gtk4
cargo build --release

sudo install -vm755 ../../target/release/libgstgtk4.so /usr/local/lib/gstreamer-1.0

[test with gst-launch-1.0 videotestsrc num-buffers=60 ! gtk4paintablesink]