title: How to fix `error: invalid command 'bdist_wheel'`?
body: <p>I try to install watchman on Ubuntu 20.04.01:</p>
  <pre><code>guettli@yoga15:~/tmp$ python3 -m venv pywatchman-test
  guettli@yoga15:~/tmp$ cd pywatchman-test
  guettli@yoga15:~/tmp/pywatchman-test$ . bin/activate
  
  (pywatchman-test) guettli@yoga15:~/tmp/pywatchman-test$ pip install pywatchman
  </code></pre>
  <p>Fails:</p>
  <pre><code>Collecting pywatchman
    Using cached pywatchman-1.4.1.tar.gz (29 kB)
  Building wheels for collected packages: pywatchman
    Building wheel for pywatchman (setup.py) ... error
    ERROR: Command errored out with exit status 1:
     command: /home/guettli/tmp/pywatchman-test/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '&quot;'&quot;'/tmp/pip-install-on_zbadt/pywatchman/setup.py'&quot;'&quot;'; __file__='&quot;'&quot;'/tmp/pip-install-on_zbadt/pywatchman/setup.py'&quot;'&quot;';f=getattr(tokenize, '&quot;'&quot;'open'&quot;'&quot;', open)(__file__);code=f.read().replace('&quot;'&quot;'\r\n'&quot;'&quot;', '&quot;'&quot;'\n'&quot;'&quot;');f.close();exec(compile(code, __file__, '&quot;'&quot;'exec'&quot;'&quot;'))' bdist_wheel -d /tmp/pip-wheel-9np2rv_b
         cwd: /tmp/pip-install-on_zbadt/pywatchman/
    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 pywatchman
    Running setup.py clean for pywatchman
  Failed to build pywatchman
  Installing collected packages: pywatchman
      Running setup.py install for pywatchman ... done
  Successfully installed pywatchman-1.4.1
  </code></pre>
  <p>I found a way to solve this: If I uninstall <code>pywatchman</code> and install <code>wheel</code> it works fine.</p>
  <p>I would like to create a patch for watchman, so that this works right of the box.</p>
  <p>How could this be solved, so that in future this does not happen any more?</p>
  <p>Related: <a href="https://github.com/facebook/watchman/issues/876" rel="noreferrer">https://github.com/facebook/watchman/issues/876</a></p>