pip install lean results in the error message below.  Why is there an error?

Building wheels for collected packages: evdev
 Building wheel for evdev (setup.py) ... error
 ERROR: Command errored out with exit status 1:
  command: ~/DevOps/lean-cli2/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-yco65w4o/evdev/setup.py'"'"'; __file__='"'"'/tmp/pip-install-yco65w4o/evdev/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-_95gucq8
      cwd: /tmp/pip-install-yco65w4o/evdev/
 Complete output (6 lines):
 usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
    or: setup.py --help [cmd1 cmd2 ...]
    or: setup.py --help-commands
    or: setup.py cmd --help
 error: invalid command 'bdist_wheel'
 ERROR: Failed building wheel for evdev
 Running setup.py clean for evdev
Failed to build evdev