Cannot install from OctoPrint or command line: ModuleNotFoundError: No module named 'octoprint'

[aaronsnoswell]

I'm trying to install ArcWelder from OctoPrint's interface (and also from SSH command line). The install fails with ModuleFoundError: No module named 'octoprint'

pi@tiltpi:~ $ cd OctoPrint/venv/bin/
pi@tiltpi:~/OctoPrint/venv/bin $ source activate
(venv) pi@tiltpi:~/OctoPrint/venv/bin $ ./pip install "https://github.com/FormerLurker/ArcWelderPlugin/archive/master.zip"
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting https://github.com/FormerLurker/ArcWelderPlugin/archive/master.zip
  Using cached https://github.com/FormerLurker/ArcWelderPlugin/archive/master.zip
  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
  ╰─> [18 lines of output]
      Unknown Version, falling back to 1.0.0+u.bb71e8f.
      Traceback (most recent call last):
        File "/home/pi/OctoPrint/venv/lib/python3.7/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
          main()
        File "/home/pi/OctoPrint/venv/lib/python3.7/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/pi/OctoPrint/venv/lib/python3.7/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-0ora9c37/overlay/lib/python3.7/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-0ora9c37/overlay/lib/python3.7/site-packages/setuptools/build_meta.py", line 323, in _get_build_requires
          self.run_setup()
        File "/tmp/pip-build-env-0ora9c37/overlay/lib/python3.7/site-packages/setuptools/build_meta.py", line 488, in run_setup
          self).run_setup(setup_script=setup_script)
        File "/tmp/pip-build-env-0ora9c37/overlay/lib/python3.7/site-packages/setuptools/build_meta.py", line 338, in run_setup
          exec(code, locals())
        File "<string>", line 84, in <module>
      ModuleNotFoundError: No module named 'octoprint'
      [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.

The same error was reported when trying to install from the OctoPrint web interface.

Let me know what debugging information would be useful to have. My Raspberry Pi is a Model B Rev 2. For now, I'm using the command line ArcWelderLib binary manually after slicing, but it would be lovely to get it this working in OctoPrint :)

Thanks for an awesome piece of software!

[aaronsnoswell]

Update... after browsing the issues database, I tried installing the devel branch and got the same error;

(venv) pi@tiltpi:~/OctoPrint/venv/bin $ ./pip install https://github.com/FormerLurker/ArcWelderPlugin/archive/devel.zip
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting https://github.com/FormerLurker/ArcWelderPlugin/archive/devel.zip
  Downloading https://github.com/FormerLurker/ArcWelderPlugin/archive/devel.zip
     | 288.8 kB 129.6 kB/s 0:00:03
  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
  ╰─> [18 lines of output]
      Unknown Version, falling back to 1.1.0rc3+u.2cfe877.
      Traceback (most recent call last):
        File "/home/pi/OctoPrint/venv/lib/python3.7/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
          main()
        File "/home/pi/OctoPrint/venv/lib/python3.7/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/pi/OctoPrint/venv/lib/python3.7/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-7j3j3koz/overlay/lib/python3.7/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-7j3j3koz/overlay/lib/python3.7/site-packages/setuptools/build_meta.py", line 323, in _get_build_requires
          self.run_setup()
        File "/tmp/pip-build-env-7j3j3koz/overlay/lib/python3.7/site-packages/setuptools/build_meta.py", line 488, in run_setup
          self).run_setup(setup_script=setup_script)
        File "/tmp/pip-build-env-7j3j3koz/overlay/lib/python3.7/site-packages/setuptools/build_meta.py", line 338, in run_setup
          exec(code, locals())
        File "<string>", line 84, in <module>
      ModuleNotFoundError: No module named 'octoprint'
      [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.

[aaronsnoswell]

Update: seems possibly related to: https://github.com/FormerLurker/Octolapse/issues/576

[scubix]

I have the exact same problem and can not get anything installed on a fresh installation of ubuntu / octoprint

[aaronsnoswell]

Yup. I've just set up a fresh install on Ubuntu instead of raspbian (nothing else installed on the system!) as well and it's got the same issue.

[aaronsnoswell]

I also can't install any other plugins though, so maybe it's not an arcwelder thing? Maybe OctoPrint in a venv is broken in recent updates?

[aaronsnoswell]

Seems it's not just us: https://community.octoprint.org/t/unable-to-install-any-octoprint-plugins/51644/2

[aaronsnoswell]

Turns out ~/OctoPrint/venv/bin/pip install wheel fixes this!