Installing gazebo_ros_pkgs ROS 1 em.py errrors, --raw-errors

edit

Using this tutorial, running catkin_make fails with the following. Fedora 32, Python 3.8, and I made sure Anaconda Python is not in $PATH

Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/em.py", line 3303, in <module>
    if __name__ == '__main__': main()
  File "/usr/lib/python3.8/site-packages/em.py", line 3301, in main
    invoke(sys.argv[1:])
  File "/usr/lib/python3.8/site-packages/em.py", line 3284, in invoke
    interpreter.wrap(interpreter.file, (file, name))
  File "/usr/lib/python3.8/site-packages/em.py", line 2295, in wrap
    self.fail(e)
  File "/usr/lib/python3.8/site-packages/em.py", line 2284, in wrap
    callable(*args)
  File "/usr/lib/python3.8/site-packages/em.py", line 2359, in file
    self.safe(scanner, done, locals)
  File "/usr/lib/python3.8/site-packages/em.py", line 2401, in safe
    self.parse(scanner, locals)
  File "/usr/lib/python3.8/site-packages/em.py", line 2421, in parse
    token.run(self, locals)
  File "/usr/lib/python3.8/site-packages/em.py", line 1425, in run
    interpreter.execute(self.code, locals)
  File "/usr/lib/python3.8/site-packages/em.py", line 2596, in execute
    _exec(statements, self.globals, locals)
  File "<string>", line 17, in <module>
  File "/usr/lib/python3.8/site-packages/catkin_pkg/topological_order.py", line 147, in topological_order
    for path, package in find_packages(space).items():
  File "/usr/lib/python3.8/site-packages/catkin_pkg/packages.py", line 96, in find_packages
    raise RuntimeError('\n'.join(duplicates))

And ends with:

CMake Error at /usr/local/bin/noetic/share/catkin/cmake/safe_execute_process.cmake:11 (message):

  execute_process(/usr/local/bin/catkin_ws/build/catkin_generated/env_cached.sh
  "/usr/bin/python3.8" "/usr/lib/python3.8/site-packages/em.py"
  "--raw-errors" "-F"
  "/usr/local/bin/catkin_ws/build/catkin_generated/order_packages.py" "-o"
  "/usr/local/bin/catkin_ws/build/catkin_generated/order_packages.cmake"
  "/usr/local/bin/noetic/share/catkin/cmake/em/order_packages.cmake.em")
  returned error code 1
Call Stack (most recent call first):
  /usr/local/bin/noetic/share/catkin/cmake/em_expand.cmake:25 (safe_execute_process)
  /usr/local/bin/noetic/share/catkin/cmake/catkin_workspace.cmake:35 (em_expand)
  CMakeLists.txt:69 (catkin_workspace)

Similar errors here.