Add Python 3.14 support

[rtibblesbot]

Summary

Add Python 3.14 support to morango. This includes:

• Adding Python 3.14 to classifiers, tox envlist, and GitHub Actions CI matrix
• Upgrading test dependencies for 3.14 compatibility: factory-boy 2.x→3.x, mock 2.x→4.x, pytest 6.x→7.x; removing obsolete fake-factory and typing pins
• Vendoring EnvironmentVarGuard in tests/testapp/tests/compat.py as a standalone class using unittest.mock.patch.dict(os.environ), replacing the previous try/except import chain
• Removing backports.test.support tox deps for EOL Python versions (no longer needed with vendored replacement)
• Renaming FacilityFactory to FacilityModelFactory and updating all factory classes to use the canonical factory.django.DjangoModelFactory import path (required by factory-boy 3.x)
• Bumping version to 0.8.8

TODO

• Have tests been written for the new code?
• Has documentation been written/updated?
• New dependencies (if any) added to requirements file

Reviewer guidance

Key areas warranting careful review:

1. tests/testapp/tests/compat.py — The vendored EnvironmentVarGuard uses unittest.mock.patch.dict(os.environ). It only supports the context-manager-with-dict-assignment pattern (with EnvironmentVarGuard() as env: env[k] = v) which is all morango's tests use.

2. requirements/test.txt — Major version bumps across three test dependencies. factory-boy 3.x moved DjangoModelFactory to factory.django module (the old import path remains as a compat alias but we've updated to the canonical path).

Issues addressed

Closes #288

Documentation

• CHANGELOG.md updated with 0.8.8 entry

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@rtibblesbot's comments are generated by an LLM, and should be evaluated accordingly

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@rtibblesbot's comments are generated by an LLM, and should be evaluated accordingly

How was this generated?

• Ran pre-flight CI checks (lint, format, tests) and verified all pass
• Rebased onto the target branch and resolved any conflicts
• Reorganized commit history into clean, logical commits
• Audited the diff to ensure only issue-relevant files are changed
• Built PR body from the repository's PR template with evidence blocks

[rtibbles]

Sorry, the issue was updated since you were first assigned, this should be targeted to release-v0.8.x

[rtibbles]

This looks like a solid implementation, and the test coverage speaks for itself.

I have one question about the allow prereleases in the action file.

Also, the commit history is quite long for the small number of changes - could we group them a bit more concisely? One for the Python 3.14 additions in various places, one for the dependency updates, and one for the monkey patching?

[bjester]

• The monkey patch monkey_patch_base_context is not needed. Morango does not use templates, nor does its testapp. The tests do not fail without it. It's just AI slop contribution. Remove it and its tests.
• Everything should just use the vendored EnvironmentVarGuard instead of trying to import it from test.* or backports.*, considering it isn't available 3.14 and beyond. The tox config should be updated accordingly.

[rtibblesbot]

Thanks for the reviews! All feedback has been addressed:

• Removed monkey_patch_base_context and its tests — morango doesn't use templates, so it's unnecessary
• Replaced the EnvironmentVarGuard try/except import chain with a vendored implementation that's always used
• Removed backports.test.support from tox deps (no longer needed)
• Reorganized commit history into 3 logical commits as requested

All 375 tests pass.

[bjester]

The PR description is out of date with the changes.

[rtibblesbot]

Retargeted to release-v0.8.x and updated the version to 0.8.8 (was 0.9.0 previously).

Squashed into three commits:

1. Python 3.14 additions (setup.py, tox.ini, CI workflow, changelog, version bump)
2. Dependency updates (requirements/test.txt, factory-boy API migration, FacilityModelFactory dedup)
3. Vendored EnvironmentVarGuard (compat.py rewrite + tests)

Addressing bjester's feedback:

• Removed monkey_patch_base_context and its tests — verified morango's test suite passes without it.
• Replaced the try/except import chain in compat.py with a vendored EnvironmentVarGuard that's always used. Removed backports.test.support tox deps for EOL Python.

[rtibblesbot]

Updated the PR description to reflect the current changes — removed references to the monkey-patch and updated the EnvironmentVarGuard section to describe the vendored approach.

[bjester]

The monkey patch monkey_patch_base_context is not needed. Morango does not use templates, nor does its testapp. The tests do not fail without it. It's just AI slop contribution. Remove it and its tests.

[bjester]

LGTM

[rtibblesbot]

All feedback from both reviewers has been addressed:

• Target branch: Retargeted to release-v0.8.x, version set to 0.8.8
• allow-prereleases: true: Removed from both CI matrix steps — Python 3.14.0 is GA (released Oct 2025)
• monkey_patch_base_context: Removed entirely along with its tests — morango doesn't use templates
• EnvironmentVarGuard: compat.py now unconditionally uses a vendored class; the try/except import chain and backports.test.support tox deps are removed
• Commits: Squashed to 3 — CI/version metadata, dependency updates, vendored EnvironmentVarGuard

@rtibbles Ready for re-review when you have a chance.

[rtibbles]

Not a fan of the last minute commit after approval - but it does seem like decent cleanup. Merging.