[Dúvida] ERRO COM O COMANDO pip install 'apache-airflow==2.3.2' --constraint

          ********************************************************************************
          Please consider removing the following classifiers in favor of a SPDX license expression:

          License :: OSI Approved :: MIT License

          See https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license for details.
          ********************************************************************************

  !!
    self._finalize_license_expression()
  running egg_info
  writing lib3/PyYAML.egg-info/PKG-INFO
  writing dependency_links to lib3/PyYAML.egg-info/dependency_links.txt
  writing top-level names to lib3/PyYAML.egg-info/top_level.txt
  Traceback (most recent call last):
    File "/home/rennan/Documents/airflowalura/venv/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 363, in <module>
      main()
    File "/home/rennan/Documents/airflowalura/venv/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 345, in main
      json_out['return_val'] = hook(**hook_input['kwargs'])
    File "/home/rennan/Documents/airflowalura/venv/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 130, in get_requires_for_build_wheel
      return hook(config_settings)
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/build_meta.py", line 331, in get_requires_for_build_wheel
      return self._get_build_requires(config_settings, requirements=[])
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/build_meta.py", line 301, in _get_build_requires
      self.run_setup()
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/build_meta.py", line 317, in run_setup
      exec(code, locals())
    File "<string>", line 271, in <module>
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/__init__.py", line 115, in setup
      return distutils.core.setup(**attrs)
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/_distutils/core.py", line 186, in setup
      return run_commands(dist)
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/_distutils/core.py", line 202, in run_commands
      dist.run_commands()
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/_distutils/dist.py", line 1002, in run_commands
      self.run_command(cmd)
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/dist.py", line 1102, in run_command
      super().run_command(command)
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/_distutils/dist.py", line 1021, in run_command
      cmd_obj.run()
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/command/egg_info.py", line 312, in run
      self.find_sources()
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/command/egg_info.py", line 320, in find_sources
      mm.run()
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/command/egg_info.py", line 543, in run
      self.add_defaults()
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/command/egg_info.py", line 581, in add_defaults
      sdist.add_defaults(self)
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/command/sdist.py", line 109, in add_defaults
      super().add_defaults()
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/_distutils/command/sdist.py", line 245, in add_defaults
      self._add_defaults_ext()
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/_distutils/command/sdist.py", line 330, in _add_defaults_ext
      self.filelist.extend(build_ext.get_source_files())
    File "<string>", line 201, in get_source_files
    File "/tmp/pip-build-env-w9_p5j50/overlay/lib/python3.10/site-packages/setuptools/_distutils/cmd.py", line 131, in __getattr__
      raise AttributeError(attr)
  AttributeError: cython_sources
  [end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× Getting requirements to build wheel did not run successfully.
│ exit code: 1
╰─> See above for output.![](![]( Insira aqui a descrição dessa imagem para ajudar na acessibilidade ))

Ei, Rennan! Tudo bem?

O erro AtributeError: cython_sources surge quando o pacote PyYAML, que o AirFlow usa uma dependência, tentou compilar o código via Cython e o ambiente não está adequado para isso.

Segue algumas sugestões para resolver:

Atualize o pip, setuptools e wheel:

Antes de instalar o Airflow, é uma boa prática garantir que você tenha as versões mais recentes dessas ferramentas. Execute os seguintes comandos:
```
pip install --upgrade pip setuptools wheel
```
Verifique a versão do Python:

Certifique-se de que você está usando uma versão do Python que é compatível com a versão do Airflow que está tentando instalar. O Airflow 2.3.2 é compatível com o Python 3.6, 3.7, 3.8 e 3.9.
Instale o Cython:

O erro menciona cython_sources, o que pode indicar que o Cython não está instalado. Tente instalar o Cython antes de instalar o Airflow:
```
pip install Cython
```

Tente uma instalação limpa:

Se os passos acima não resolverem, você pode tentar criar um novo ambiente virtual e fazer a instalação novamente:

python -m venv airflow_env
source airflow_env/bin/activate  # No Windows use: airflow_env\Scripts\activate
pip install --upgrade pip setuptools wheel
pip install 'apache-airflow==2.3.2' --constraint "https://raw.githubusercontent.com/apache/airflow/constraints-2.3.2/constraints-3.9.txt"

Espero ter ajudado e qualquer dúvida, compartilhe no fórum.

Até mais, Rennan!

Caso este post tenha lhe ajudado, por favor, marcar como solucionado!