Massimiliano Culpo a93a613668 Speedup environment activation (#13557) ... * Add a transaction around repeated calls to `spec.prefix` in the activation process * cache the computation of home in the python package to speed up setting deps * ensure that module-scope variables are only set *once* per module		2019-12-02 14:05:35 -08:00
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spack	Speedup environment activation (#13557)	2019-12-02 14:05:35 -08:00