Collecting openpyxl==3.0.3 (from -r requirements.txt (line 1))
  Using cached openpyxl-3.0.3.tar.gz (172 kB)
  Preparing metadata (setup.py): started
  Preparing metadata (setup.py): finished with status 'done'
Collecting amici==0.11.12 (from -r requirements.txt (line 2))
  Using cached amici-0.11.12.tar.gz (1.5 MB)
  Preparing metadata (setup.py): started
  Preparing metadata (setup.py): finished with status 'done'
Collecting matplotlib==3.2.1 (from -r requirements.txt (line 3))
  Using cached matplotlib-3.2.1.tar.gz (40.3 MB)
  Preparing metadata (setup.py): started
  Preparing metadata (setup.py): finished with status 'error'
  error: subprocess-exited-with-error
  
  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [16 lines of output]
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "/tmp/pip-install-so2cripj/matplotlib_723022ddc6a74c59bdbed529bc4a4c3b/setup.py", line 50, in <module>
          __version__ = versioneer.get_version()
                        ^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-install-so2cripj/matplotlib_723022ddc6a74c59bdbed529bc4a4c3b/versioneer.py", line 1410, in get_version
          return get_versions()["version"]
                 ^^^^^^^^^^^^^^
        File "/tmp/pip-install-so2cripj/matplotlib_723022ddc6a74c59bdbed529bc4a4c3b/versioneer.py", line 1344, in get_versions
          cfg = get_config_from_root(root)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-install-so2cripj/matplotlib_723022ddc6a74c59bdbed529bc4a4c3b/versioneer.py", line 401, in get_config_from_root
          parser = configparser.SafeConfigParser()
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      AttributeError: module 'configparser' has no attribute 'SafeConfigParser'. Did you mean: 'RawConfigParser'?
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
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.