Massimiliano Culpo 8ecf5ae2ee Spack can guess lmod core compilers, if none is already present ... closes #8916 Currently Spack ends with an error if asked to write lmod modules files and the 'core_compilers' entry is not found in `modules.yaml`. After this PR an attempt will be made to guess that entry and the site configuration file will be updated accordingly. This is similar to what Spack already does to guess compilers on first run.		2018-08-27 14:49:50 -07:00
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spack	Spack can guess lmod core compilers, if none is already present	2018-08-27 14:49:50 -07:00