Search for 'catkin' in workspace failed (catkin_find_pkg catkin /home/imr/catkin_ws/src): Traceback (most recent call last) [closed]

edit

I get the following error with catkin_make, I was trying to install Sphinx and its dependencies, I am using ros indigo,

anyone can help me please ????

imr@IMR-PC:~/catkin_ws$ catkin_make
Base path: /home/imr/catkin_ws
Source space: /home/imr/catkin_ws/src
Build space: /home/imr/catkin_ws/build
Devel space: /home/imr/catkin_ws/devel
Install space: /home/imr/catkin_ws/install
####
#### Running command: "make cmake_check_build_system" in "/home/imr/catkin_ws/build"
####
CMake Error at CMakeLists.txt:20 (message):
  Search for 'catkin' in workspace failed (catkin_find_pkg catkin
  /home/imr/catkin_ws/src): Traceback (most recent call last):

    File "/usr/bin/catkin_find_pkg", line 5, in <module>
      from pkg_resources import load_entry_point
    File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 70, in <module>
      import packaging.version

  ImportError: No module named packaging.version


-- Configuring incomplete, errors occurred!
See also "/home/imr/catkin_ws/build/CMakeFiles/CMakeOutput.log".
See also "/home/imr/catkin_ws/build/CMakeFiles/CMakeError.log".
make: *** [cmake_check_build_system] Error 1
Invoking "make cmake_check_build_system" failed