Only override location if artifact_path is supplied.

Signed-off-by: Bryce Gattis <[email protected]>

src/rezplugins/package_repository/mongo.py

@@ -284,10 +284,6 @@ def install_variant(self, variant_resource: VariantResource, artifact_path=None,
         variant_name = variant_resource.name
         variant_version = variant_resource.version
 
-        # At this point, the variant_resource is in memory repository...?
-
-        variant_location = artifact_path
-
         if "name" in overrides:
             variant_name = overrides["name"]
             if variant_name is self.remove:
@@ -307,7 +303,8 @@ def install_variant(self, variant_resource: VariantResource, artifact_path=None,
 
             variant_version = ver
 
-        overrides["location"] = variant_location
+        if artifact_path:
+            overrides["location"] = artifact_path
 
         post = self._get_variant_document(variant_resource, overrides)
         post_id = post.get("_id")