Fixup install_scripts_stuff on Linux

vinca/templates/build_ament_python.sh.in

@@ -8,11 +8,12 @@ grep -q "install[-_]scripts" setup.cfg
 if [ $? -eq 0 ]; then
   INSTALL_SCRIPTS_ARG=""
 else
-  # this is not quite what we want as PKG_NAME contains ros-humble- ..
-  # INSTALL_SCRIPTS_ARG="--install-scripts=$PREFIX/lib/$PKG_NAME"
-  # therefore for now throw an error as packages should have a setup.cfg
-  echo "This package is missing a setup.cfg, stopping."
-  exit 1
+  # Remove e.g. ros-humble- from PKG_NAME
+  PKG_NAME_SHORT=${PKG_NAME#*ros-@(ros_distro)-}
+  # Substitute "-" with "_"
+  PKG_NAME_SHORT=${PKG_NAME_SHORT//-/_}
+  INSTALL_SCRIPTS_ARG="--install-scripts=$PREFIX/lib/$PKG_NAME_SHORT"
+  echo "WARNING: setup.cfg not set, will set INSTALL_SCRIPTS_ARG to: $INSTALL_SCRIPTS_ARG"
 fi
 
 # Old: This installs the binaries in the wrong location - see https://github.com/RoboStack/ros-humble/issues/41