ingest pixelflux for gpu detection, add X11 fallback on legacy systems

Author: thelamer

root/etc/s6-overlay/s6-rc.d/init-selkies-config/run

@@ -1,5 +1,12 @@
 #!/usr/bin/with-contenv bash
 
+# check if underlying system supports wayland binaries
+if ! grep -q avx2 /proc/cpuinfo; then
+  echo "[ls.io-init] CPU does not support AVX2. Falling back to X11"
+  printf "false" > /run/s6/container_environment/PIXELFLUX_WAYLAND
+  PIXELFLUX_WAYLAND="false"
+fi
+
 # set paths for wayland or xorg
 if [[ "${PIXELFLUX_WAYLAND}" == "true" ]];then
   CONF_DIR="$HOME/.config/labwc"