Python provider is now available in Skylark

Using mandatoryProvidersList to validate python rules' dependency.
Added a SkylarkProvider named 'py' which is a SkylarkClassObject in Java and a
struct in Skylark. Native python rule and Skylark python rule should have this provider
so that they can depend on each other.

RELNOTES[NEW]: Native python rule can depend on skylark rule as long as skylark
rule provides 'py' provider.

--
MOS_MIGRATED_REVID=116241504

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/python/PyBinary.java b/src/main/java/com/google/devtools/build/lib/rules/python/PyBinary.java
index ae048a0a03..ab8d490e4b 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/python/PyBinary.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/python/PyBinary.java
@@ -76,7 +76,7 @@ public abstract class PyBinary implements RuleConfiguredTargetFactory {
     Runfiles commonRunfiles = collectCommonRunfiles(ruleContext, common, semantics);
 
     Runfiles.Builder defaultRunfilesBuilder = new Runfiles.Builder(ruleContext.getWorkspaceName())
-        .merge(commonRunfiles);
+                                    .merge(commonRunfiles);
     semantics.collectDefaultRunfilesForBinary(ruleContext, defaultRunfilesBuilder);
     Runfiles defaultRunfiles = defaultRunfilesBuilder.build();