Todd Gamblin d1e03329c5 Memoize all_specs() and exists() for better performance. ... - Real bottleneck is calling normalize() for every spec when we read it. - Need to store graph information in spec files to avoid the need for this. - Also, normalizing old specs isn't always possible, so we need to do this anyway.		2015-02-15 11:50:13 -08:00
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spack	Memoize all_specs() and exists() for better performance.	2015-02-15 11:50:13 -08:00