Peter Scheibel 31ff791180 features: Update compiler caching (#7675) ... Compiler caching was using the `id()` function to refer to configuration dictionary objects. If these objects are garbage-collected, this can produce incorrect results (false positive cache hits). This change replaces `id()` with an object that keeps a reference to the config dictionary so that it is not garbage-collected.		2019-08-19 11:24:05 -07:00
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spack	features: Update compiler caching (#7675)	2019-08-19 11:24:05 -07:00