diff options
| -rw-r--r-- | lib/spack/spack/concretize.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/spack/spack/concretize.py b/lib/spack/spack/concretize.py index 5d9715feed..58811c3419 100644 --- a/lib/spack/spack/concretize.py +++ b/lib/spack/spack/concretize.py @@ -84,7 +84,8 @@ class DefaultConcretizer(object): raise NoBuildError(spec) def cmp_externals(a, b): - if a.name != b.name: + if a.name != b.name and (not a.external or a.external_module and + not b.external and b.external_module): # We're choosing between different providers, so # maintain order from provider sort return candidates.index(a) - candidates.index(b) |