Todd Gamblin 3519a17624 specs: avoid traversing specs when parsing ... The Spec parser currently calls `spec.traverse()` after every parse, in order to set the platform if it's not set. We don't need to do a full traverse -- we can just check the platforrm as new specs are parsed. This takes about a second off the time required to import all packages in Spack (from 8s to 7s). - [x] simplify platform-setting logic in `SpecParser`.		2020-01-29 21:15:58 -08:00
..
spack	specs: avoid traversing specs when parsing	2020-01-29 21:15:58 -08:00