calculate-overlay/games-util/steam-launcher/files/steam-fix-joystick-detection.patch

diff -Naur a/steam b/steam
--- a/steam	2016-08-14 18:44:23.069675427 +0100
+++ b/steam	2016-08-14 18:44:29.853577578 +0100
@@ -38,6 +38,27 @@
 # Gentoo's lsb-release doesn't set this.
 export DISTRIB_RELEASE="2.2"
 
+# Finds joystick devices so we can coerce Steam's old SDL library into using them
+function enum_joysticks {
+  local joyprop=ID_INPUT_JOYSTICK=1
+  for f in /dev/input/*; do
+    if [ ! -c $f ]; then
+      continue
+    elif udevadm info --query=property --name=$f | grep --quiet $joyprop; then
+      echo $f
+    fi
+  done
+}
+
+# Uses the first arg as a separator to join the remaining args
+function join {
+  local IFS="$1"
+  shift
+  echo "$*"
+}
+
+export SDL_JOYSTICK_DEVICE=$(join : $(enum_joysticks))
+
 function show_message()
 {
 	style=$1