Matt Thompson

This PR adds preliminary support for the `LLVMFlang` compiler. At the moment, there are still issues with testing, etc.

As `macos-11` is deprecated at GitHub Actions (and is ancient) we remove it and add `macos-13`

Build Error with GNU + fms_r8 + Debug Flags

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**Describe the bug** In trying to build FMS 2024.01 with GNU 13.2 and Open MPI 4.1.6 with `-DCMAKE_BUILD_TYPE=Debug` I ran into an error: ``` [ 85%] Building Fortran object CMakeFiles/fms_r8_f.dir/coupler/coupler_types.F90.o...

NAG 7.2 does not build 5.0.2, but does 4.1.6: -pthread passed to ld

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## Background information ### What version of Open MPI are you using? (e.g., v4.1.6, v5.0.1, git branch name and hash, etc.) I'm testing Open MPI 5.0.2 (and 4.1.6) ### Describe...

mepo: new package

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This PR adds a new package to spack: [mepo](https://github.com/GEOS-ESM/mepo/), a python-based tool we use at the GMAO to manage the multiple repositories that make it up our models via a...

As `macos-11` is deprecated at GitHub Actions (and is ancient) and `macos-12` is also old, we remove them and add `macos-13` and `macos-14`. We also fix up the Ubuntu tests...

Add CI

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This is my attempt at adding some CI here.

subset.bounding_circle error during plotting

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### Version v2024.06.0 ### How did you install UXarray? Pip ### What happened? With the support for GEOS CS files via #802 in v2024.06.0, I decided to try it out...

Build error with NAG 7.2: Option error: Unrecognised option -pthread

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So this is...interesting. I've had issues building [Open MPI 5 with NAG 7.2](https://github.com/open-mpi/ompi/issues/12413) where the symptom was: ``` make[3]: Entering directory '/ford1/share/gmao_SIteam/MPI/src/openmpi-5.0.2/build-nag-7.2.01/ompi/mpi/fortran/mpif-h' CCLD libmpi_mpifh.la /usr/bin/ld: unrecognized option '-pthread' /usr/bin/ld: use...

This PR updates the CI to remove `gfortran-11` from the general matrix. Now only `ubuntu-22.04` supports `gfortran-10` and `gfortran-11`. The other images only support `gfortran-12` and higher. Moreover, `ubuntu-22.04` does...