无法使用pip安装新的tflitesupport

Question

在这个link之后，我一直在尝试使用pip安装tflite-support模块。我得到以下错误：

ERROR: Command errored out with exit status 1:
 command: /usr/local/opt/python/bin/python3.7 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/gg/1zr67t6d11lczcdmc7tc3y000000gn/T/pip-install-tfso4suc/tflite-support/setup.py'"'"'; __file__='"'"'/private/var/folders/gg/1zr67t6d11lczcdmc7tc3y000000gn/T/pip-install-tfso4suc/tflite-support/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /private/var/folders/gg/1zr67t6d11lczcdmc7tc3y000000gn/T/pip-install-tfso4suc/tflite-support/pip-egg-info
     cwd: /private/var/folders/gg/1zr67t6d11lczcdmc7tc3y000000gn/T/pip-install-tfso4suc/tflite-support/
Complete output (27 lines):
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/private/var/folders/gg/1zr67t6d11lczcdmc7tc3y000000gn/T/pip-install-tfso4suc/tflite-support/setup.py", line 178, in <module>
    zip_safe=False,
  File "/Users/anupamchugh/Library/Python/3.7/lib/python/site-packages/setuptools/__init__.py", line 143, in setup
    _install_setup_requires(attrs)
  File "/Users/anupamchugh/Library/Python/3.7/lib/python/site-packages/setuptools/__init__.py", line 138, in _install_setup_requires
    dist.fetch_build_eggs(dist.setup_requires)
  File "/Users/anupamchugh/Library/Python/3.7/lib/python/site-packages/setuptools/dist.py", line 698, in fetch_build_eggs
    replace_conflicting=True,
  File "/Users/anupamchugh/Library/Python/3.7/lib/python/site-packages/pkg_resources/__init__.py", line 783, in resolve
    replace_conflicting=replace_conflicting
  File "/Users/anupamchugh/Library/Python/3.7/lib/python/site-packages/pkg_resources/__init__.py", line 1066, in best_match
    return self.obtain(req, installer)
  File "/Users/anupamchugh/Library/Python/3.7/lib/python/site-packages/pkg_resources/__init__.py", line 1078, in obtain
    return installer(requirement)
  File "/Users/anupamchugh/Library/Python/3.7/lib/python/site-packages/setuptools/dist.py", line 754, in fetch_build_egg
    return fetch_build_egg(self, req)
  File "/Users/anupamchugh/Library/Python/3.7/lib/python/site-packages/setuptools/installer.py", line 133, in fetch_build_egg
    wheel.install_as_egg(dist_location)
  File "/Users/anupamchugh/Library/Python/3.7/lib/python/site-packages/setuptools/wheel.py", line 103, in install_as_egg
    self._install_as_egg(destination_eggdir, zf)
  File "/Users/anupamchugh/Library/Python/3.7/lib/python/site-packages/setuptools/wheel.py", line 111, in _install_as_egg
    self._convert_metadata(zf, destination_eggdir, dist_info, egg_info)
  File "/Users/anupamchugh/Library/Python/3.7/lib/python/site-packages/setuptools/wheel.py", line 132, in _convert_metadata
    os.mkdir(destination_eggdir)
FileExistsError: [Errno 17] File exists: '/private/var/folders/gg/1zr67t6d11lczcdmc7tc3y000000gn/T/pip-install-tfso4suc/tflite-support/.eggs/pybind11-2.4.3-py3.7.egg'
----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

有线索吗？我知道有人问过类似的问题before，但这些答案并不成功

Answer 1

将评论转化为答案：

这看起来像是setuptools中的回归。降级至41：

$ pip install  upgrade 'setuptools<42'

现在（理想情况下）预安装pybind11以避免在构建tflite-support控制盘时丢失头：

$ pip install 'pybind11>=2.4'

现在安装tflite-support应该成功，没有任何中间错误：

$ pip install tflite-support