poetry related changes

[aucampia]

• .github/workflows/validate.yaml:
  • Cache the default XDG_CACHE_HOME instead of messing with PIP_CACHE_DIR and the variable. This simplifies caching quite a bit and also ensures caching works for poetry.
  • Install poetry for extra-tasks, so that poetry install works correctly.
  • Get an auth token in extra-tasks so we don't get hit by rate limiting.
• docs/conf.py:
  • Disable nit picking on pre-python 3.8 as this causes problems with older sphinx.
• docs/developers.rst and docs/docs.rst:
  • Incorporate poetry into instructions.
• docker-compose.yml:
  • Set POETRY_VIRTUALENVS_IN_PROJECT=1 so that the .venv goes into a docker volume instead of going to emphemeral storage.
• Dockerfile.devcontainer
  • Don't install dependencies globally. With poetry, everyone should use poetry, and when using poetry the global python environment should not be used, so if people use the devcontainer correctly the global dependencies should have no effect.
• poetry.lock
  • Ran poetry lock after changes to pyproject.toml, most notable change is the stuff added to the dev Poetry dependency group is no longer optional.
• pyproject.toml:
  • Simplified the dependency constrains for networkx as this was causing problems with tox, as tox was running pip install with 'networkx<3.0.0,>=2.6.2; (python_version >= "3.7" and python_version < "3.8") and extra == "networkx"' 'networkx<3.0.0,>=2.8.8; (python_version >= "3.8" and python_version < "4.0") and extra == "networkx"' and the extra == "networkx" here would never be true.
  • Added a dev poetry dependendcy group with everything that is needed for a sane development environment so that poetry install gets you a sane dev environment.
• Taskfile.yml:
  • Changed the commands so that everything works as before but now instead runs things with poetry.
  • Removed the legacy venv handling and replaced it with poetry equivalents.
• tox.ini:
  • Don't set nitpicky (-n) on the command line as it is being set conditionally on python version in docs/conf.py now.

[aucampia]

May be worth waiting for: RDFLib#2192

[aucampia]

May be worth waiting for: RDFLib#2192

Build finished and coverage is same as before: https://coveralls.io/builds/55615509