Installation error: AttributeError: 'UltraMagicString' object has no attribute 'endswith'

[sbenthall]

Installation from source on Pop!_OS 22.04 LTS 64-bit failed with:

Collecting django-sortedm2m==0.8.1
  Downloading django-sortedm2m-0.8.1.tar.gz (26 kB)
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error
  
  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [29 lines of output]
      running egg_info
      creating /tmp/pip-pip-egg-info-n1vrrpnf/django_sortedm2m.egg-info
      writing /tmp/pip-pip-egg-info-n1vrrpnf/django_sortedm2m.egg-info/PKG-INFO
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "/tmp/pip-install-dqgifzw7/django-sortedm2m_981131a807284449a1a6393702cfc37b/setup.py", line 55, in <module>
          setup(
        File "/var/www/roundware/lib/python3.10/site-packages/setuptools/__init__.py", line 87, in setup
          return distutils.core.setup(**attrs)
        File "/var/www/roundware/lib/python3.10/site-packages/setuptools/_distutils/core.py", line 185, in setup
          return run_commands(dist)
        File "/var/www/roundware/lib/python3.10/site-packages/setuptools/_distutils/core.py", line 201, in run_commands
          dist.run_commands()
        File "/var/www/roundware/lib/python3.10/site-packages/setuptools/_distutils/dist.py", line 968, in run_commands
          self.run_command(cmd)
        File "/var/www/roundware/lib/python3.10/site-packages/setuptools/dist.py", line 1217, in run_command
          super().run_command(command)
        File "/var/www/roundware/lib/python3.10/site-packages/setuptools/_distutils/dist.py", line 987, in run_command
          cmd_obj.run()
        File "/var/www/roundware/lib/python3.10/site-packages/setuptools/command/egg_info.py", line 301, in run
          writer(self, ep.name, os.path.join(self.egg_info, ep.name))
        File "/var/www/roundware/lib/python3.10/site-packages/setuptools/command/egg_info.py", line 675, in write_pkg_info
          metadata.write_pkg_info(cmd.egg_info)
        File "/var/www/roundware/lib/python3.10/site-packages/setuptools/_distutils/dist.py", line 1136, in write_pkg_info
          self.write_pkg_file(pkg_info)
        File "/var/www/roundware/lib/python3.10/site-packages/setuptools/dist.py", line 233, in write_pkg_file
          if not long_description.endswith("\n"):
      AttributeError: 'UltraMagicString' object has no attribute 'endswith'
      [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.

[sbenthall]

I seem to get a related error when trying vagrant up
https://gist.github.com/sbenthall/f9344d9d40bb47f5cf18c39271f5b93a

[sbenthall]

It looks like the masterbranch of roundware is pinned to v0.8.1 of django-sortedm2m.
But there is a version 3.11 available for this library.

[hburgund]

I was able to spin up a vagrant instance fresh by changing the django-sortedm2m version to 3.1.1 in requirements. I have not had time to test if there are any functional issues as a result, but Roundware hardly uses the sortedm2m functionality anymore, so I don't anticipate any issues. That said, definitely keep an eye out!