Change allowedRuleClasses/mandatoryProviders semantics to "either-or" instead of "and".

Also allow native rules to require declared providers on their
dependencies.

--
MOS_MIGRATED_REVID=135454750

1 files changed, 10 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/analysis/PackageGroupConfiguredTarget.java b/src/main/java/com/google/devtools/build/lib/analysis/PackageGroupConfiguredTarget.java
index 549932daa0..c8b26b97bf 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/PackageGroupConfiguredTarget.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/PackageGroupConfiguredTarget.java
@@ -20,7 +20,10 @@ import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
 import com.google.devtools.build.lib.events.Event;
 import com.google.devtools.build.lib.packages.PackageGroup;
 import com.google.devtools.build.lib.packages.PackageSpecification;
+import com.google.devtools.build.lib.packages.SkylarkClassObject;
+import com.google.devtools.build.lib.packages.SkylarkClassObjectConstructor.Key;
 import com.google.devtools.build.lib.util.Preconditions;
+import javax.annotation.Nullable;
 
 /**
  * Dummy ConfiguredTarget for package groups. Contains no functionality, since
@@ -69,4 +72,11 @@ public final class PackageGroupConfiguredTarget extends AbstractConfiguredTarget
     // No providers.
     return null;
   }
+
+  @Nullable
+  @Override
+  public SkylarkClassObject get(Key providerKey) {
+    // No providers.
+    return null;
+  }
 }