Massimiliano Culpo 5881a03408 Use Spec.constrain to construct spec lists for stacks (#28783) ... * stacks: add regression tests for matrix expansion * Use constrain semantics to construct spec lists for stacks * Fix semantics for constraining an anonymous spec. Add tests		2022-02-04 19:17:23 +00:00
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spack	Use Spec.constrain to construct spec lists for stacks (#28783)	2022-02-04 19:17:23 +00:00