update pckage.xml based on #39

Author: k-okada

smach_viewer/package.xml

@@ -1,4 +1,4 @@
-<package>
+<package format="3">
   <name>smach_viewer</name>
   <version>4.0.0</version>
   <description>
@@ -25,14 +25,23 @@
   <build_depend>rostest</build_depend>
 
   <!-- Dependencies needed after this package is compiled. -->
-  <run_depend>smach_ros</run_depend>
-  <run_depend>smach_msgs</run_depend>
-  <!-- originally depends on xdot : https://github.com/jbohren/xdot/blob/2.0.1/package.xml#L25-L26 -->
-  <run_depend>wxpython</run_depend>
-  <run_depend>graphviz</run_depend>
-  <run_depend>python-gi</run_depend>
-  <run_depend>python-gi-cairo</run_depend>
-  <run_depend>gtk3</run_depend>
+  <exec_depend>smach_ros</exec_depend>
+  <exec_depend>smach_msgs</exec_depend>
+
+  <exec_depend condition="$ROS_PYTHON_VERSION == 2">wxpython</exec_depend>
+  <exec_depend condition="$ROS_PYTHON_VERSION == 2">python-xdot</exec_depend>
+  <exec_depend condition="$ROS_PYTHON_VERSION == 3">python3-xdot</exec_depend>
+  <exec_depend condition="$ROS_PYTHON_VERSION == 3">python3-wxgtk4.0</exec_depend>
+  <exec_depend>graphviz</exec_depend>
+  <exec_depend condition="$ROS_PYTHON_VERSION == 2">python-gi</exec_depend>
+  <exec_depend condition="$ROS_PYTHON_VERSION == 3">python3-gi</exec_depend>
+  <exec_depend condition="$ROS_PYTHON_VERSION == 2">python-rospkg</exec_depend>
+  <exec_depend condition="$ROS_PYTHON_VERSION == 3">python3-rospkg</exec_depend>
+  <exec_depend condition="$ROS_PYTHON_VERSION == 2">python-qt5-bindings</exec_depend>
+  <exec_depend condition="$ROS_PYTHON_VERSION == 3">python3-qt5-bindings</exec_depend>
+  <exec_depend condition="$ROS_PYTHON_VERSION == 2">python-gi-cairo</exec_depend>
+  <exec_depend condition="$ROS_PYTHON_VERSION == 3">python3-gi-cairo</exec_depend>
+  <exec_depend>gtk3</exec_depend>
 
   <export>