Update mpi4py to 4.1.2

[jan-janssen]

Summary by CodeRabbit

• Chores
  • Updated mpi4py dependency from version 4.1.1 to 4.1.2 across all CI/CD, development, and project environments.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 084eda93-4aaf-48ba-8a64-d2d922c4f08a

📥 Commits

Reviewing files that changed from the base of the PR and between 5c6f818 and 0ca158e.

📒 Files selected for processing (1)

• pyproject.toml

📝 Walkthrough

Walkthrough

The PR updates the pinned mpi4py dependency version from 4.1.1 to 4.1.2 consistently across seven configuration files: five CI environment YAML files, the Binder environment file, and the project's pyproject.toml optional dependencies.

Changes

mpi4py dependency version update

Layer / File(s)	Summary
Update mpi4py to 4.1.2 across CI and project configs .ci_support/environment-docs.yml, .ci_support/environment-integration.yml, .ci_support/environment-mpich.yml, .ci_support/environment-openmpi.yml, .ci_support/environment-win.yml, binder/environment.yml, pyproject.toml	mpi4py dependency is bumped from version 4.1.1 to 4.1.2 across all CI support environments (documentation, integration, MPICH, OpenMPI, Windows), Binder, and optional dependencies in the project configuration.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• pyiron/executorlib#844: Modifies .ci_support/environment-integration.yml to set a pinned mpi4py version (directly related configuration file).
• pyiron/executorlib#417: Also updates conda environment and project dependency pins for mpi4py as part of other dependency management work.

Poem

🐰 Four-point-one-point-two hops along with glee,
Across configs and files, consistent we'll be!
From MPICH to Windows, through clouds we ascend,
A humble bump done, dependencies mend. 🎯

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Update mpi4py to 4.1.2' accurately and concisely summarizes the main change across all files—upgrading mpi4py from 4.1.1 to 4.1.2.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch mpi4py

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@pyproject.toml`:
- Line 53: The pyproject declares mpi4py pinned to different versions across
extras; update the `all` extra's entry for "mpi4py" to match the `mpi` extra by
changing the `mpi4py==4.1.1` reference in the `all` extra to `mpi4py==4.1.2` so
both `mpi` and `all` extras pin mpi4py to the same version and avoid dependency
drift.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 0ce8c31d-fb07-426a-ab09-d6965a20d3cb

📥 Commits

Reviewing files that changed from the base of the PR and between 4a63cb1 and 5c6f818.

📒 Files selected for processing (7)

• .ci_support/environment-docs.yml
• .ci_support/environment-integration.yml
• .ci_support/environment-mpich.yml
• .ci_support/environment-openmpi.yml
• .ci_support/environment-win.yml
• binder/environment.yml
• pyproject.toml

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.16%. Comparing base (4a63cb1) to head (0ca158e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #986   +/-   ##
=======================================
  Coverage   94.16%   94.16%           
=======================================
  Files          39       39           
  Lines        2092     2092           
=======================================
  Hits         1970     1970           
  Misses        122      122           

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