diff options
| -rw-r--r-- | lib/spack/spack/provider_index.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/spack/spack/provider_index.py b/lib/spack/spack/provider_index.py index 2be48b43c1..d7f2379486 100644 --- a/lib/spack/spack/provider_index.py +++ b/lib/spack/spack/provider_index.py @@ -232,7 +232,8 @@ class ProviderIndex(object): spdict[provided_spec] = opdict[provided_spec] continue - spdict[provided_spec] += opdict[provided_spec] + spdict[provided_spec] = \ + spdict[provided_spec].union(opdict[provided_spec]) def remove_provider(self, pkg_name): """Remove a provider from the ProviderIndex.""" |