Can we include `dateutil` by default for spack-stack python?

[guoqing-noaa]

Is your feature request related to a problem?

dateutil is an ultra-frequently-used package, can we include it by default for spack-stack Python?

Currently, people needs to do module load py-python-dateutil/2.8.2 separately.
Lots of people don't even know this exists.

When they get the following erros:

Traceback (most recent call last):
  File "/scratch3/BMC/wrfruc/gge/rrfs2/regressionTests/rrfs-workflow.20251121/workflow/./setup_rocoto.py", line 6, in <module>
    from rocoto_funcs.setup_xml import setup_xml
  File "/scratch3/BMC/wrfruc/gge/rrfs2/regressionTests/rrfs-workflow.20251121/workflow/rocoto_funcs/setup_xml.py", line 5, in <module>
    from rocoto_funcs.base import header_begin, header_entities, header_end, \
  File "/scratch3/BMC/wrfruc/gge/rrfs2/regressionTests/rrfs-workflow.20251121/workflow/rocoto_funcs/base.py", line 6, in <module>
    from dateutil.relativedelta import relativedelta
ModuleNotFoundError: No module named 'dateutil'

they may just think there is something wrong with the spack-stack Python and will try to find other Python that work.

Describe the solution you'd like

Add dateutil to the default stack-stack Python.

Additional context

None

[climbfuji]

I don't think we can change that without moving away from modules on HPCs altogether. It's not too hard to source a script that loads whatever is needed when you are working on a certain piece of code. Most codes have their own config-env scripts anyway.

[guoqing-noaa]

I don't think we can change that without moving away from modules on HPCs altogether. It's not too hard to source a script that loads whatever is needed when you are working on a certain piece of code. Most codes have their own config-env scripts anyway.

@climbfuji That's fine if there is no easy way to do this. Thanks for the information.

[climbfuji]

I'll keep this open for after the spack-stack-2.0.0 release. We may want to start introducing environment views, or maybe we can find another solution.