libaec module missing on Hercules

[DavidHuber-NOAA]

Describe the bug
The libaec module file is missing from the Hercules spack-stack v1.6.0 installation. The library installed, but the module file was never generated.

To Reproduce
find /work/noaa/epic/role-epic/spack-stack/hercules/spack-stack-1.6.0/envs/unified-env/install/modulefiles -name "libaec"

Expected behavior
The module file would have been generated with the installation.

System:
What system(s) are you running the code on?
Hercules

Additional context
Discovered while testing NOAA-EMC/GSI#684, which fails with netCDF errors.

[climbfuji]

@DavidHuber-NOAA This is intentional. See

spack-stack/configs/common/modules_lmod.yaml

Line 39 in 08029ed

- libaec

and

spack-stack/configs/common/modules_tcl.yaml

Line 41 in 08029ed

- libaec

. We don't produce modules for libaec and several other spack packages to keep the list "short" (well, that is probably not the right term for the number of modules a user is presented at the moment).

If the module is indeed needed, we should remove it from the exclude list so that it is available with the next spack-stack release.

On the other hand, we should look at the list of modules generated for unified-env and add as many as we can to the exclude list to make this more readable.

[DavidHuber-NOAA]

@climbfuji I see now, thanks for the explanation. This is probably a special case as libaec seems to only have been needed for a standalone test build of netcdf. In general, I don't think it will be needed, but I'd like to finish my netCDF/GSI testing before closing this issue just to be sure.

[DavidHuber-NOAA]

This module is not needed by any end application, so I am closing this issue.