YOLOX is not installing

To install yolox I did these two:

git clone git@github.com:Megvii-BaseDetection/YOLOX.git
cd YOLOX

Then pip3 install -v -e . is not working. Here is the log of this command.

Using pip 22.0.2 from /usr/lib/python3/dist-packages/pip (python 3.10)
Defaulting to user installation because normal site-packages is not writeable
Obtaining file:///mnt/Shared/azimjon/YOLOX
  Running command python setup.py egg_info
  running egg_info
  creating /tmp/pip-pip-egg-info-ypvf739l/yolox.egg-info
  writing /tmp/pip-pip-egg-info-ypvf739l/yolox.egg-info/PKG-INFO
  writing dependency_links to /tmp/pip-pip-egg-info-ypvf739l/yolox.egg-info/dependency_links.txt
  writing requirements to /tmp/pip-pip-egg-info-ypvf739l/yolox.egg-info/requires.txt
  writing top-level names to /tmp/pip-pip-egg-info-ypvf739l/yolox.egg-info/top_level.txt
  writing manifest file '/tmp/pip-pip-egg-info-ypvf739l/yolox.egg-info/SOURCES.txt'
  /home/azimjon/.local/lib/python3.10/site-packages/torch/utils/cpp_extension.py:476: UserWarning: Attempted to use ninja as the BuildExtension backend but we could not find ninja.. Falling back to using the slow distutils backend.
    warnings.warn(msg.format('we could not find ninja.'))
  reading manifest file '/tmp/pip-pip-egg-info-ypvf739l/yolox.egg-info/SOURCES.txt'
  reading manifest template 'MANIFEST.in'
  warning: no files found matching '*.cu' under directory 'yolox'
  warning: no files found matching '*.cuh' under directory 'yolox'
  warning: no files found matching '*.cc' under directory 'yolox'
  adding license file 'LICENSE'
  writing manifest file '/tmp/pip-pip-egg-info-ypvf739l/yolox.egg-info/SOURCES.txt'
  Preparing metadata (setup.py) ... done
Collecting loguru
  Using cached loguru-0.6.0-py3-none-any.whl (58 kB)
Collecting ninja
  Using cached ninja-1.11.1-py2.py3-none-manylinux_2_12_x86_64.manylinux2010_x86_64.whl (145 kB)
Collecting numpy
  Using cached numpy-1.24.1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (17.3 MB)
Collecting onnx-simplifier==0.4.1
  Using cached onnx-simplifier-0.4.1.tar.gz (19.8 MB)
  Running command python setup.py egg_info
  fatal: not a git repository (or any of the parent directories): .git
  fatal: not a git repository (or any of the parent directories): .git
  Traceback (most recent call last):
    File "<string>", line 2, in <module>
    File "<pip-setuptools-caller>", line 34, in <module>
    File "/tmp/pip-install-q2xkxl0n/onnx-simplifier_795fe5484b37426fb7feb48837b76bd9/setup.py", line 64, in <module>
      assert CMAKE, 'Could not find "cmake" executable!'
  AssertionError: Could not find "cmake" executable!
  error: subprocess-exited-with-error
  
  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> See above for output.
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  full command: /usr/bin/python3 -c '
  exec(compile('"'"''"'"''"'"'
  # This is <pip-setuptools-caller> -- a caller that pip uses to run setup.py
  #
  # - It imports setuptools before invoking setup.py, to enable projects that directly
  #   import from `distutils.core` to work with newer packaging standards.
  # - It provides a clear error message when setuptools is not installed.
  # - It sets `sys.argv[0]` to the underlying `setup.py`, when invoking `setup.py` so
  #   setuptools doesn'"'"'t think the script is `-c`. This avoids the following warning:
  #     manifest_maker: standard file '"'"'-c'"'"' not found".
  # - It generates a shim setup.py, for handling setup.cfg-only projects.
  import os, sys, tokenize
  
  try:
      import setuptools
  except ImportError as error:
      print(
          "ERROR: Can not execute `setup.py` since setuptools is not available in "
          "the build environment.",
          file=sys.stderr,
      )
      sys.exit(1)
  
  __file__ = %r
  sys.argv[0] = __file__
  
  if os.path.exists(__file__):
      filename = __file__
      with tokenize.open(__file__) as f:
          setup_py_code = f.read()
  else:
      filename = "<auto-generated setuptools caller>"
      setup_py_code = "from setuptools import setup; setup()"
  
  exec(compile(setup_py_code, filename, "exec"))
  '"'"''"'"''"'"' % ('"'"'/tmp/pip-install-q2xkxl0n/onnx-simplifier_795fe5484b37426fb7feb48837b76bd9/setup.py'"'"',), "<pip-setuptools-caller>", "exec"))' egg_info --egg-base /tmp/pip-pip-egg-info-nazgrqy3
  cwd: /tmp/pip-install-q2xkxl0n/onnx-simplifier_795fe5484b37426fb7feb48837b76bd9/
  Preparing metadata (setup.py) ... error
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

Start by reproducing pip3 install -v -e . from the repository root and read the onnx-simplifier metadata failure. Inspect the dependency's setup.py, especially the check for the cmake executable. Done means the documented YOLOX installation completes without the reported metadata-generation error.