Call install_headers.py.

README.rst

@@ -78,6 +78,7 @@ Then, install pygame_sdl2 by running the following commands::
     git clone https://www.github.com/renpy/pygame_sdl2
     pushd pygame_sdl2
     python setup.py install
+    python install_headers.py $VIRTUAL_ENV
     popd
 
 Next, set RENPY_DEPS_INSTALL To a \:-separated (\;-separated on Windows)

run.sh

@@ -43,6 +43,10 @@ setup () {
         build -b build/lib.$variant -t build/tmp.$variant $BUILD_J \
         $RENPY_BUILD_ARGS install $ADAPT_TO_SETUPTOOLS
 
+    if [ -e install_headers.py ]; then
+        python install_headers.py $VIRTUAL_ENV
+    fi
+
     popd >/dev/null
 }
 
@@ -50,6 +54,8 @@ if [ -e "$ROOT/pygame_sdl2" ]; then
     setup "$ROOT/pygame_sdl2/"
 fi
 
+
+
 if [ -e "$ROOT/cubism" ]; then
     export CUBISM="$ROOT/cubism"
     export CUBISM_PLATFORM=${CUBISM_PLATFORM:-linux/x86_64}