spack/var
Massimiliano Culpo 17b13b161b Directive inheritance: laziness for the win (#2623)
* inheritance of directives: using meta-classes to inject attributes coming from directives into packages + lazy directives

* _dep_types -> dependency_types
* using a meta-class to inject directives into packages
* directives are lazy

fixes #2466

* directives.py: allows for multiple inheritance. Added blank lines as suggested by @tgamblin

* directives.py: added a test for simple inheritance of directives

* Minor improvement requested by @tgamblin

CMakePackage: importing names from spack.directives
directives: wrap __new__ to respect pep8

* Refactoring requested by @tgamblin

directives: removed global variables in favor of class variables. Simplified the interface for directives (they return a callable on a package or a list of them).
2016-12-28 12:37:02 -08:00
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spack Directive inheritance: laziness for the win (#2623) 2016-12-28 12:37:02 -08:00