Update flux-core to 0.78.0

[jan-janssen]

Summary by CodeRabbit

• Chores
  • Updated CI environments to use Flux core 0.78.0 and aligned PMIx (0.6.0) for OpenMPI setups, improving consistency of MPI-based test runs.
  • Refreshed the interactive environment to Flux core 0.78.0, ensuring compatibility with the latest Flux stack.
  • These dependency updates enhance stability, reproducibility, and alignment across testing and example environments without changing user-facing functionality.

[coderabbitai]

Walkthrough

Version pins for Flux components were updated: the CI workflow references were changed to use flux-core 0.78.0 (with flux-pmix remaining 0.6.0), and Binder’s environment was updated to flux-core 0.78.0. No other logic or control-flow changes were made.

Changes

Cohort / File(s)	Summary
CI workflow environment pins .github/workflows/pipeline.yml	Updated CI steps to use environment specs with flux-core pinned to 0.78.0. For MPICH: flux-core 0.65.0 → 0.78.0. For OpenMPI: flux-core 0.65.0 → 0.78.0; flux-pmix remains 0.6.0.
Binder environment binder/environment.yml	Bumped flux-core 0.65.0 → 0.78.0. No other dependency changes.

Sequence Diagram(s)

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Update flux-pmix to 0.6.0 #836 — Also updates Flux-related package versions in environment files, indicating similar dependency pin changes.

Poem

I nibbled the pins to shiny new might,
From 0.65 to 0.78—just right!
In Binder and CI, the carrots align,
Flux hums along, dependencies fine.
A hop, a bump, a whisker’s delight—
Ship it swift through the moonlit night! 🥕✨

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title Check	✅ Passed	The title clearly and specifically describes the main change in the pull request, which is updating flux-core to version 0.78.0 across CI workflows and environment files. It is concise, accurately reflects the primary change, and would make sense to any teammate reviewing the project history.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch core

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 7809b34 and f873ba9.

📒 Files selected for processing (2)

• .github/workflows/pipeline.yml (2 hunks)
• binder/environment.yml (1 hunks)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (19)

• GitHub Check: unittest_openmpi (ubuntu-latest, 3.13)
• GitHub Check: unittest_mpich (ubuntu-22.04-arm, 3.13)
• GitHub Check: unittest_slurm_mpich
• GitHub Check: unittest_mpich (ubuntu-latest, 3.11)
• GitHub Check: unittest_mpich (ubuntu-latest, 3.13)
• GitHub Check: unittest_mpich (macos-latest, 3.13)
• GitHub Check: unittest_mpich (ubuntu-24.04-arm, 3.13)
• GitHub Check: unittest_mpich (ubuntu-latest, 3.12)
• GitHub Check: unittest_openmpi (ubuntu-latest, 3.12)
• GitHub Check: notebooks_integration
• GitHub Check: unittest_openmpi (macos-latest, 3.13)
• GitHub Check: unittest_openmpi (ubuntu-22.04-arm, 3.13)
• GitHub Check: unittest_openmpi (ubuntu-latest, 3.11)
• GitHub Check: unittest_openmpi (ubuntu-24.04-arm, 3.13)
• GitHub Check: unittest_win
• GitHub Check: unittest_old
• GitHub Check: unittest_flux_mpich
• GitHub Check: benchmark (ubuntu-latest, 3.13, .ci_support/environment-openmpi.yml)
• GitHub Check: benchmark (ubuntu-latest, 3.13, .ci_support/environment-mpich.yml)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.22%. Comparing base (7809b34) to head (f873ba9).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #837      +/-   ##
==========================================
+ Coverage   98.16%   98.22%   +0.05%     
==========================================
  Files          34       34              
  Lines        1688     1688              
==========================================
+ Hits         1657     1658       +1     
+ Misses         31       30       -1     

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