Todd Gamblin cd5fa128c5 Work on SPACK-41: Optional dependencies work for simple conditions. ... - Can depend conditionally based on variant, compiler, arch, deps, etc - normalize() is not iterative yet: no chaining depends_ons - really need a SAT solver, but iterative will at least handle simple cases. - Added "strict" option to Spec.satisfies() - strict checks that ALL of other's constraints are met (not just the ones self shares) - Consider splitting these out into two methods: could_satisfy() and satisfies() - didn't do this yet as it would require changing code that uses satisfies() - Changed semantics of __contains__ to use strict satisfaction (SPACK-56) - Added tests for optional dependencies. - The constrain() method on Specs, compilers, versions, etc. now returns whether the spec changed as a result of the call.		2015-05-12 09:56:59 -07:00
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package.py	Work on SPACK-41: Optional dependencies work for simple conditions.	2015-05-12 09:56:59 -07:00