Todd Gamblin 60cf3fdb34 concretizer: add basic semantics for compilers ... - This handles setting the compiler and falling back to a default compiler, as well as providing default values for compilers/compiler versions. - Versions still aren't quite right -- you can't properly override versions on compiler specs.		2020-11-17 10:04:13 -08:00
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spack	concretizer: add basic semantics for compilers	2020-11-17 10:04:13 -08:00