Unable to install foliant due to PyYAML / Cython 3 incompatibility

[Flameeyes]

(glucometerutils) flameeyes@seleya:~/devel/repos/freestyle-hid> pip install foliant
Collecting foliant
  Using cached foliant-1.0.13-py3-none-any.whl (15 kB)
Collecting cliar<2.0.0,>=1.3.2 (from foliant)
  Using cached cliar-1.3.5-py3-none-any.whl (6.5 kB)
Collecting prompt_toolkit<3.0,>=2.0 (from foliant)
  Using cached prompt_toolkit-2.0.10-py3-none-any.whl (340 kB)
Collecting pyyaml<6.0.0,>=5.1.1 (from foliant)
  Using cached PyYAML-5.4.1.tar.gz (175 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  error: subprocess-exited-with-error
  
  × Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [68 lines of output]
      /tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/config/setupcfg.py:293: _DeprecatedConfig: Deprecated config in `setup.cfg`
      !!
      
              ********************************************************************************
              The license_file parameter is deprecated, use license_files instead.
      
              By 2023-Oct-30, you need to update your project and remove deprecated calls
              or your builds will no longer be supported.
      
              See https://setuptools.pypa.io/en/latest/userguide/declarative_config.html for details.
              ********************************************************************************
      
      !!
        parsed = self.parsers.get(option_name, lambda x: x)(value)
      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/flameeyes/devel/venvs/glucometerutils/lib64/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
          main()
        File "/home/flameeyes/devel/venvs/glucometerutils/lib64/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 335, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/home/flameeyes/devel/venvs/glucometerutils/lib64/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 118, in get_requires_for_build_wheel
          return hook(config_settings)
                 ^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 341, in get_requires_for_build_wheel
          return self._get_build_requires(config_settings, requirements=['wheel'])
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 323, in _get_build_requires
          self.run_setup()
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 338, in run_setup
          exec(code, locals())
        File "<string>", line 271, in <module>
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/__init__.py", line 107, in setup
          return distutils.core.setup(**attrs)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 185, in setup
          return run_commands(dist)
                 ^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 201, in run_commands
          dist.run_commands()
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 969, in run_commands
          self.run_command(cmd)
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/dist.py", line 1234, in run_command
          super().run_command(command)
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 988, in run_command
          cmd_obj.run()
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/command/egg_info.py", line 314, in run
          self.find_sources()
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/command/egg_info.py", line 322, in find_sources
          mm.run()
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/command/egg_info.py", line 551, in run
          self.add_defaults()
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/command/egg_info.py", line 589, in add_defaults
          sdist.add_defaults(self)
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/command/sdist.py", line 104, in add_defaults
          super().add_defaults()
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/_distutils/command/sdist.py", line 251, in add_defaults
          self._add_defaults_ext()
        File "/tmp/pip-build-env-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/_distutils/command/sdist.py", line 336, 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-oa5igw9c/overlay/lib/python3.11/site-packages/setuptools/_distutils/cmd.py", line 107, 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.

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

This is a known issue (yaml/pyyaml#601) but due to the constraint in the PyYAML version it can't be easily fixed.

[francbartoli]

@Flameeyes, pinning pyyaml to 5.3.1 worked for me