diff options
| -rw-r--r-- | lib/spack/spack/solver/concretize.lp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/spack/spack/solver/concretize.lp b/lib/spack/spack/solver/concretize.lp index 817c529082..6f5b584dfa 100644 --- a/lib/spack/spack/solver/concretize.lp +++ b/lib/spack/spack/solver/concretize.lp @@ -78,6 +78,10 @@ node(D) :- node(P), depends_on(P, D). 1 { variant_value(P, V, X) : variant_possible_value(P, V, X) } 1 :- node(P), variant(P, V), variant_single_value(P, V). +% at least one variant value for multi-valued variants. +1 { variant_value(P, V, X) : variant_possible_value(P, V, X) } + :- node(P), variant(P, V), not variant_single_value(P, V). + % if a variant is set to anything, it is considered 'set'. variant_set(P, V) :- variant_set(P, V, _). |