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concretizer bugfix: all variants need possible values

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Variants like `cpu_target` on `openblas` don't have defineed values, but
they have a default.  Ensure that the default is always a possible value
for the solver.
This commit is contained in:
Todd Gamblin 2020-01-02 20:04:31 -08:00
parent 9b1f05df00
commit 810542d4fe
1 changed files with 4 additions and 0 deletions
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4
lib/spack/spack/solver/asp.py
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@ -354,6 +354,10 @@ def pkg_rules(self, pkg):
union.update(s) union.update(s)
values = union values = union
# make sure that every variant has at least one posisble value
if not values:
values = [variant.default]
for value in sorted(values): for value in sorted(values):
self.fact(fn.variant_possible_value(pkg.name, name, value)) self.fact(fn.variant_possible_value(pkg.name, name, value))