OctoPrint plugin to downgrade pip 22 to 21.3.1 to work around an issue between OctoPrint < 1.8.0 and pip >= 22

README.md

Usage

Read and complete all steps below!

1. Verify your pip version is 22 or higher via the System info:

   

   

   If not, this plugin won't work!

2. Install this plugin via OctoPrint's plugin manager: Get More, from URL, enter https://gist.githubusercontent.com/foosel/4d2d34d7689a07b6d506d9508fc115f4/raw/downgrade_pip_22.py:

   

3. Restart OctoPrint

4. Restart OctoPrint again

5. Verify your pip version is now 21.3.1:

   

6. Uninstall the plugin again:

   

---

If OctoPrint is now prompting you to upgrade pip

1. Go into Settings > Software Update

2. Click on the wrench button to open the plugin config

3. Untick the checkbox "Enable pip update checks

   

4. Save

downgrade_pip_22.py

import octoprint.plugin

from octoprint.util.pip import create_pip_caller
from octoprint.util.version import get_comparable_version

class DowngradePip22Plugin(octoprint.plugin.StartupPlugin):
    def on_after_startup(self):
        import pkg_resources

        try:
            pip = pkg_resources.get_distribution("pip")
        except pkg_resources.DistributionNotFound:
            self._logger.info("pip not installed (O_O), can't proceed")
            return
        
        pip_version = get_comparable_version(pip.version)
        if pip_version < get_comparable_version("22"):
            self._logger.info("pip version is {}, no downgrade needed".format(pip.version))
            return
        
        self._logger.info("Found pip 22+, downgrading...")

        pip_caller = create_pip_caller()
        pip_code, pip_out, pip_err = pip_caller.execute("install", "pip==21.3.1")

        self._logger.info("pip downgrade returned status code {}".format(pip_code))
        self._logger.info("STDOUT:\n{}".format("\n".join(pip_out)))
        self._logger.warning("STDERR:\n{}".format("\n".join(pip_err)))

        if pip_code == 0:
            self._logger.info("pip successfully downgraded to 21.3.1")
        else:
            self._logger.warning("pip could not be downgraded to 21.3.1")

__plugin_pythoncompat__ = ">=2.7,<4"
__plugin_implementation__ = DowngradePip22Plugin()