[RatkoVasic-NOAA]

…e MPI. (#2205)

(cherry picked from commit 9b1c885)

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Description

Cherry pick from release/2.2

Dependencies

Issues addressed

Closes #2204

Applications affected

Systems affected

Gaea C7

Testing

• CI: Note whether the automatic tests (GitHub actions tests that run automatically for every commit) pass or not
  • GitHub actions CI tests pass
  • GitHub actions CI tests do not pass (provide explanation)
  • GitHub actions CI tests skipped (provide explanation if necessary)
• New tests added: List and describe any new tests added to GitHub actions
  • ...
• Additional testing: Add information on any additional tests conducted
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Checklist

• This PR addresses one issue/problem/enhancement or has a very good reason for not doing so.
• These changes have been tested on the affected systems and applications.
• All dependency PRs/issues have been resolved and this PR can be merged.
• All necessary updates to the documentation (spack-stack wiki) will be made when this PR is merged

[Copilot]

🟡 Changes recommended

The Cairo override drops shared version and variant requirements, risking modulefile collisions, while the oneAPI changes leave the requested compiler-before-MPI module ordering unimplemented.

2 open issues

• Use a list to preserve shared Cairo requirements · New
• Add the oneAPI module prerequisite to the MPI external · New

What changed in this PR

This cherry-pick updates Gaea C7’s site configuration to address Cairo linking and Intel module prerequisites.

Changes:

• Requires Cairo’s X11 support to address the reported missing symbol.
• Adds matching oneAPI compiler modules before MKL in both Intel configurations.

File	Description
configs/​sites/​tier1/​gaea-c7/​packages.yaml	Enables Cairo’s X11 variant.
configs/​sites/​tier1/​gaea-c7/​packages_oneapi-2026.0.0.yaml	Loads oneAPI 2026.0.0 before MKL.
configs/​sites/​tier1/​gaea-c7/​packages_oneapi-2025.3.1.yaml	Loads oneAPI 2025.3.1 before MKL.

_{Review effort: Balanced}

[climbfuji]

We don't need this PR, release/2.2 will be merged back into develop shortly.