Massimiliano Culpo 31f660bd90 Improve output of the external find command (#18017) ... This commit adds output to the "spack external find" command to inform users of the result of the operation. It also fixes a bug introduced in #17804 due to the fact that a function was not updated to conform to the new packages.yaml format (_get_predefined_externals).		2020-08-13 14:36:58 -07:00
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spack	Improve output of the external find command (#18017)	2020-08-13 14:36:58 -07:00