Massimiliano Culpo c4d18671fe Avoid best-effort expansion of stacks (#40792) ... fixes #40791 Currently stacks behave differently if used in unify:false environments, which leads to inconsistencies during concretization. For instance, we might have two abstract user specs that do not intersect with each other map to the same concrete spec in the environment. This is clearly wrong. This PR removes the best effort expansion, so that user specs are always applied strictly.		2024-09-05 10:32:15 -06:00
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spack	Avoid best-effort expansion of stacks (#40792)	2024-09-05 10:32:15 -06:00