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Move in vs. satisfies to a note and mention special cases of in (#41727)

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* Move in vs. satisfies to a note and mention special cases of in
* Address feedback: oveoverlap -> intersect
* Re-word the satisfies versus in note.

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Co-authored-by: Massimiliano Culpo <massimiliano.culpo@gmail.com>
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Tamara Dahlgren 2024-01-09 11:04:38 -08:00 committed by GitHub
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lib/spack/docs/packaging_guide.rst
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@ -4379,10 +4379,16 @@ implementation was selected for this build:
elif "mvapich" in spec:
configure_args.append("--with-mvapich")
It's also a bit more concise than satisfies. The difference between
the two functions is that ``satisfies()`` tests whether spec
constraints overlap at all, while ``in`` tests whether a spec or any
of its dependencies satisfy the provided spec.
It's also a bit more concise than satisfies.
.. note::
The ``satisfies()`` method tests whether this spec has, at least, all the constraints of the argument spec,
while ``in`` tests whether a spec or any of its dependencies satisfy the provided spec.
If the provided spec is anonymous (e.g., ":1.2:", "+shared") or has the
same name as the spec being checked, then ``in`` works the same as
``satisfies()``; however, use of ``satisfies()`` is more intuitive.
^^^^^^^^^^^^^^^^^^^^^^^
Architecture specifiers