Todd Gamblin a3799b2c7b performance: speed up spack find in environments ... `Environment.added_specs()` has a loop around calls to `Package.installed()`, which can result in repeated DB queries. Optimize this with a read transaction in `Environment`.		2019-12-18 16:07:28 -08:00
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spack	performance: speed up spack find in environments	2019-12-18 16:07:28 -08:00