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authorMassimiliano Culpo <massimiliano.culpo@googlemail.com>2017-09-06 03:44:42 +0200
committerTodd Gamblin <tgamblin@llnl.gov>2017-09-05 15:44:42 -1000
commitd1a5857a03dc2e21f5514fa2bcfafe0ec0210f12 (patch)
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Added support for querying by tags (#4786)
* Added support to query packages by tags. - The querying commands `spack list`, `spack find` and `spack info` have been modified to support querying by tags. Tests have been added to check that the feature is working correctly under what should be the most frequent use cases. * Refactored Repo class to make insertion of new file caches easier. - Added the class FastPackageChecker. This class is a Mapping from package names to stat info, that gets memoized for faster access. - Extracted the creation of a ProviderIndex to its own factory function. * Added a cache file for tags. - Following what was done for providers, a TagIndex class has been added. This class can serialize and deserialize objects from json. Repo and RepoPath have a new method 'packages_with_tags', that uses the TagIndex to compute a list of package names that have all the tags passed as arguments. On Ubuntu 14.04 the effect if the cache reduces the time for spack list from ~3sec. to ~0.3sec. after the cache has been built. * Fixed colorization of `spack info`
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