Update Pythons in CI

[bollwyvl]

References

• fixes Drop Python 3.6, start testing a newer version, restore MacOS to latest #718
• prerequisite to rebooting [wip] Add Robot Framework language server #493

Code changes

• deps: updates python_requires to 3.7
• CI: normalizes CPython versions under test to 3.7 and 3.10
  • might need to roll back top to 3.9 for solveability
  • add r 4.* and 3.* to matrix
  • share node_modules cache between build and lint
• docs: updates readthedocs to use new environment configuration
  • uses docker image pre-loaded with mambaforge

User-facing changes

• n/a

Backwards-incompatible changes

• users on python 3.6 will be unable to upgrade to future versions

Chores

• linted
• tested
• documented
• changelog entry

[github-actions]

👈 Launch a binder notebook on branch bollwyvl/jupyterlab-lsp/gh-718-ci-pythons

[bollwyvl]

Looks like 3.10 is a no-go for.... reasons:

package r-recommended-3.3.2-r3.3.2_0 requires r-base 3.3.2, but none of the providers can be installed

[bollwyvl]

Anecdata: the RTD build took 252 seconds, vs 274 for master

[krassowski]

Is probably safe to witch R to 4.0 maybe even 4.1. Would that help?

[bollwyvl]

R to 4.0 maybe even 4.1

Sure' maybe worth trying...

[bollwyvl]

All of the acceptance tests have run to completion at least once, so I don't see why this wouldn't work, now. Still checking out binder, but otherwise fairly happy with the changes.

[krassowski]

LGTM, thank you!

[bollwyvl]

Whoops, on master CI:

 Invalid workflow file

The workflow is not valid. .github/workflows/job.test.yml (Line: 16, Col: 10): Unexpected value ''

[krassowski]

Huh? https://github.community/t/breaking-change-to-concurrency-group-syntax/215604

[bollwyvl]

Hotfixed on e83d8e6, but still need to see if that's the right thing to have done. Basically, want to only be running one set of jobs per PR...

[krassowski]

So that issue I linked to was resolved: actions/runner#1532