diff --git a/src/test/java/com/google/devtools/build/lib/analysis/util/AnalysisTestCase.java b/src/test/java/com/google/devtools/build/lib/analysis/util/AnalysisTestCase.java
index 406b360..25322fd 100644
--- a/src/test/java/com/google/devtools/build/lib/analysis/util/AnalysisTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/analysis/util/AnalysisTestCase.java
@@ -53,6 +53,7 @@
 import com.google.devtools.build.lib.skyframe.ConfiguredTargetKey;
 import com.google.devtools.build.lib.skyframe.DiffAwareness;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.skyframe.PrecomputedValue;
 import com.google.devtools.build.lib.skyframe.SequencedSkyframeExecutor;
 import com.google.devtools.build.lib.skyframe.SkyValueDirtinessChecker;
@@ -179,7 +180,8 @@
             getPrecomputedValues(),
             ImmutableList.<SkyValueDirtinessChecker>of(),
             analysisMock.getProductName(),
-            CrossRepositoryLabelViolationStrategy.ERROR);
+            CrossRepositoryLabelViolationStrategy.ERROR,
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD));
     PackageCacheOptions packageCacheOptions = Options.getDefaults(PackageCacheOptions.class);
     packageCacheOptions.showLoadingProgress = true;
     packageCacheOptions.globbingThreads = 3;
diff --git a/src/test/java/com/google/devtools/build/lib/analysis/util/BuildViewTestCase.java b/src/test/java/com/google/devtools/build/lib/analysis/util/BuildViewTestCase.java
index a25b498..4a4b03d 100644
--- a/src/test/java/com/google/devtools/build/lib/analysis/util/BuildViewTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/analysis/util/BuildViewTestCase.java
@@ -123,6 +123,7 @@
 import com.google.devtools.build.lib.skyframe.ConfiguredTargetKey;
 import com.google.devtools.build.lib.skyframe.DiffAwareness;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.skyframe.PrecomputedValue;
 import com.google.devtools.build.lib.skyframe.SequencedSkyframeExecutor;
 import com.google.devtools.build.lib.skyframe.SkyValueDirtinessChecker;
@@ -226,7 +227,8 @@
             getPrecomputedValues(),
             ImmutableList.<SkyValueDirtinessChecker>of(),
             analysisMock.getProductName(),
-            CrossRepositoryLabelViolationStrategy.ERROR);
+            CrossRepositoryLabelViolationStrategy.ERROR,
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD));
     packageCacheOptions.defaultVisibility = ConstantRuleVisibility.PUBLIC;
     packageCacheOptions.showLoadingProgress = true;
     packageCacheOptions.globbingThreads = 7;
diff --git a/src/test/java/com/google/devtools/build/lib/analysis/util/ConfigurationTestCase.java b/src/test/java/com/google/devtools/build/lib/analysis/util/ConfigurationTestCase.java
index 66a071e..a3ea604 100644
--- a/src/test/java/com/google/devtools/build/lib/analysis/util/ConfigurationTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/analysis/util/ConfigurationTestCase.java
@@ -39,6 +39,7 @@
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
 import com.google.devtools.build.lib.skyframe.DiffAwareness;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.skyframe.PrecomputedValue;
 import com.google.devtools.build.lib.skyframe.SequencedSkyframeExecutor;
 import com.google.devtools.build.lib.skyframe.SkyValueDirtinessChecker;
@@ -115,7 +116,8 @@
             ImmutableList.<PrecomputedValue.Injected>of(),
             ImmutableList.<SkyValueDirtinessChecker>of(),
             analysisMock.getProductName(),
-            CrossRepositoryLabelViolationStrategy.ERROR);
+            CrossRepositoryLabelViolationStrategy.ERROR,
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD));
 
     PackageCacheOptions packageCacheOptions = Options.getDefaults(PackageCacheOptions.class);
     packageCacheOptions.showLoadingProgress = true;
diff --git a/src/test/java/com/google/devtools/build/lib/packages/util/PackageLoadingTestCase.java b/src/test/java/com/google/devtools/build/lib/packages/util/PackageLoadingTestCase.java
index 03d8fdf..3925329 100644
--- a/src/test/java/com/google/devtools/build/lib/packages/util/PackageLoadingTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/packages/util/PackageLoadingTestCase.java
@@ -37,6 +37,7 @@
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
 import com.google.devtools.build.lib.skyframe.DiffAwareness;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.skyframe.PrecomputedValue;
 import com.google.devtools.build.lib.skyframe.SequencedSkyframeExecutor;
 import com.google.devtools.build.lib.skyframe.SkyValueDirtinessChecker;
@@ -116,7 +117,8 @@
             ImmutableList.<PrecomputedValue.Injected>of(),
             ImmutableList.<SkyValueDirtinessChecker>of(),
             loadingMock.getProductName(),
-            CrossRepositoryLabelViolationStrategy.ERROR);
+            CrossRepositoryLabelViolationStrategy.ERROR,
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD));
     return skyframeExecutor;
   }
 
diff --git a/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java b/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java
index 32e8b4b..bf49ba0 100644
--- a/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java
+++ b/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java
@@ -37,6 +37,7 @@
 import com.google.devtools.build.lib.packages.util.LoadingMock;
 import com.google.devtools.build.lib.skyframe.DiffAwareness;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.skyframe.PrecomputedValue;
 import com.google.devtools.build.lib.skyframe.SequencedSkyframeExecutor;
 import com.google.devtools.build.lib.skyframe.SkyValueDirtinessChecker;
@@ -485,7 +486,8 @@
               ImmutableList.<PrecomputedValue.Injected>of(),
               ImmutableList.<SkyValueDirtinessChecker>of(),
               loadingMock.getProductName(),
-              CrossRepositoryLabelViolationStrategy.ERROR);
+              CrossRepositoryLabelViolationStrategy.ERROR,
+              ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD));
       PackageCacheOptions packageCacheOptions = Options.getDefaults(PackageCacheOptions.class);
       packageCacheOptions.defaultVisibility = ConstantRuleVisibility.PUBLIC;
       packageCacheOptions.showLoadingProgress = true;
diff --git a/src/test/java/com/google/devtools/build/lib/pkgcache/LoadingPhaseRunnerTest.java b/src/test/java/com/google/devtools/build/lib/pkgcache/LoadingPhaseRunnerTest.java
index c1279ac..d917969 100644
--- a/src/test/java/com/google/devtools/build/lib/pkgcache/LoadingPhaseRunnerTest.java
+++ b/src/test/java/com/google/devtools/build/lib/pkgcache/LoadingPhaseRunnerTest.java
@@ -47,6 +47,7 @@
 import com.google.devtools.build.lib.packages.util.MockToolsConfig;
 import com.google.devtools.build.lib.skyframe.DiffAwareness;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.skyframe.PrecomputedValue;
 import com.google.devtools.build.lib.skyframe.SequencedSkyframeExecutor;
 import com.google.devtools.build.lib.skyframe.SkyValueDirtinessChecker;
@@ -613,7 +614,8 @@
               ImmutableList.<PrecomputedValue.Injected>of(),
               ImmutableList.<SkyValueDirtinessChecker>of(),
               analysisMock.getProductName(),
-              CrossRepositoryLabelViolationStrategy.ERROR);
+              CrossRepositoryLabelViolationStrategy.ERROR,
+              ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD));
       PathPackageLocator pkgLocator = PathPackageLocator.create(
           null, options.packagePath, storedErrors, workspace, workspace);
       PackageCacheOptions packageCacheOptions = Options.getDefaults(PackageCacheOptions.class);
diff --git a/src/test/java/com/google/devtools/build/lib/pkgcache/PackageCacheTest.java b/src/test/java/com/google/devtools/build/lib/pkgcache/PackageCacheTest.java
index 77e34d9..fa22c66 100644
--- a/src/test/java/com/google/devtools/build/lib/pkgcache/PackageCacheTest.java
+++ b/src/test/java/com/google/devtools/build/lib/pkgcache/PackageCacheTest.java
@@ -43,6 +43,7 @@
 import com.google.devtools.build.lib.packages.util.MockToolsConfig;
 import com.google.devtools.build.lib.skyframe.DiffAwareness;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.skyframe.PrecomputedValue;
 import com.google.devtools.build.lib.skyframe.SequencedSkyframeExecutor;
 import com.google.devtools.build.lib.skyframe.SkyValueDirtinessChecker;
@@ -99,7 +100,8 @@
             ImmutableList.<PrecomputedValue.Injected>of(),
             ImmutableList.<SkyValueDirtinessChecker>of(),
             analysisMock.getProductName(),
-            CrossRepositoryLabelViolationStrategy.ERROR);
+            CrossRepositoryLabelViolationStrategy.ERROR,
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD));
     setUpSkyframe(parsePackageCacheOptions());
   }
 
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/ArtifactFunctionTestCase.java b/src/test/java/com/google/devtools/build/lib/skyframe/ArtifactFunctionTestCase.java
index cd017be..e3c6a97 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/ArtifactFunctionTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/ArtifactFunctionTestCase.java
@@ -23,6 +23,7 @@
 import com.google.devtools.build.lib.skyframe.ActionLookupValue.ActionLookupKey;
 import com.google.devtools.build.lib.skyframe.ExternalFilesHelper.ExternalFileAction;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.testutil.TestConstants;
 import com.google.devtools.build.lib.testutil.TestRuleClassProvider;
 import com.google.devtools.build.lib.testutil.TestUtils;
@@ -93,7 +94,10 @@
                     new PackageFunction(null, null, null, null, null, null, null))
                 .put(
                     SkyFunctions.PACKAGE_LOOKUP,
-                    new PackageLookupFunction(null, CrossRepositoryLabelViolationStrategy.ERROR))
+                    new PackageLookupFunction(
+                        null,
+                        CrossRepositoryLabelViolationStrategy.ERROR,
+                        ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD)))
                 .put(
                     SkyFunctions.WORKSPACE_AST,
                     new WorkspaceASTFunction(TestRuleClassProvider.getRuleClassProvider()))
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/ContainingPackageLookupFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/ContainingPackageLookupFunctionTest.java
index fa5f891..1260439 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/ContainingPackageLookupFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/ContainingPackageLookupFunctionTest.java
@@ -26,6 +26,7 @@
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
 import com.google.devtools.build.lib.skyframe.ExternalFilesHelper.ExternalFileAction;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.testutil.FoundationTestCase;
 import com.google.devtools.build.lib.testutil.TestConstants;
 import com.google.devtools.build.lib.util.io.TimestampGranularityMonitor;
@@ -70,7 +71,10 @@
     Map<SkyFunctionName, SkyFunction> skyFunctions = new HashMap<>();
     skyFunctions.put(
         SkyFunctions.PACKAGE_LOOKUP,
-        new PackageLookupFunction(deletedPackages, CrossRepositoryLabelViolationStrategy.ERROR));
+        new PackageLookupFunction(
+            deletedPackages,
+            CrossRepositoryLabelViolationStrategy.ERROR,
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD)));
     skyFunctions.put(SkyFunctions.CONTAINING_PACKAGE_LOOKUP, new ContainingPackageLookupFunction());
     skyFunctions.put(SkyFunctions.BLACKLISTED_PACKAGE_PREFIXES,
         new BlacklistedPackagePrefixesFunction());
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/FileFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/FileFunctionTest.java
index 6de849a..91dbc6c 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/FileFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/FileFunctionTest.java
@@ -42,6 +42,7 @@
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
 import com.google.devtools.build.lib.skyframe.ExternalFilesHelper.ExternalFileAction;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.testutil.ManualClock;
 import com.google.devtools.build.lib.testutil.TestConstants;
 import com.google.devtools.build.lib.testutil.TestRuleClassProvider;
@@ -145,7 +146,8 @@
                     SkyFunctions.PACKAGE_LOOKUP,
                     new PackageLookupFunction(
                         new AtomicReference<>(ImmutableSet.<PackageIdentifier>of()),
-                        CrossRepositoryLabelViolationStrategy.ERROR))
+                        CrossRepositoryLabelViolationStrategy.ERROR,
+                        ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD)))
                 .put(
                     SkyFunctions.WORKSPACE_AST,
                     new WorkspaceASTFunction(TestRuleClassProvider.getRuleClassProvider()))
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/FilesetEntryFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/FilesetEntryFunctionTest.java
index e030cef..40d6d4e 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/FilesetEntryFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/FilesetEntryFunctionTest.java
@@ -38,6 +38,7 @@
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
 import com.google.devtools.build.lib.skyframe.ExternalFilesHelper.ExternalFileAction;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.testutil.FoundationTestCase;
 import com.google.devtools.build.lib.testutil.TestConstants;
 import com.google.devtools.build.lib.util.Fingerprint;
@@ -101,7 +102,10 @@
         SkyFunctions.RECURSIVE_FILESYSTEM_TRAVERSAL, new RecursiveFilesystemTraversalFunction());
     skyFunctions.put(
         SkyFunctions.PACKAGE_LOOKUP,
-        new PackageLookupFunction(deletedPackages, CrossRepositoryLabelViolationStrategy.ERROR));
+        new PackageLookupFunction(
+            deletedPackages,
+            CrossRepositoryLabelViolationStrategy.ERROR,
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD)));
     skyFunctions.put(SkyFunctions.BLACKLISTED_PACKAGE_PREFIXES,
         new BlacklistedPackagePrefixesFunction());
     skyFunctions.put(SkyFunctions.FILESET_ENTRY, new FilesetEntryFunction());
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java
index e4bf7f1..d6d0bf7 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java
@@ -39,6 +39,7 @@
 import com.google.devtools.build.lib.skyframe.DirtinessCheckerUtils.BasicFilesystemDirtinessChecker;
 import com.google.devtools.build.lib.skyframe.ExternalFilesHelper.ExternalFileAction;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.testutil.TestConstants;
 import com.google.devtools.build.lib.testutil.TestRuleClassProvider;
 import com.google.devtools.build.lib.util.io.TimestampGranularityMonitor;
@@ -119,7 +120,8 @@
         SkyFunctions.PACKAGE_LOOKUP,
         new PackageLookupFunction(
             new AtomicReference<>(ImmutableSet.<PackageIdentifier>of()),
-            CrossRepositoryLabelViolationStrategy.ERROR));
+            CrossRepositoryLabelViolationStrategy.ERROR,
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD)));
     skyFunctions.put(SkyFunctions.WORKSPACE_AST,
         new WorkspaceASTFunction(TestRuleClassProvider.getRuleClassProvider()));
     skyFunctions.put(SkyFunctions.WORKSPACE_FILE,
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/GlobFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/GlobFunctionTest.java
index 4ee3a8e..27abfaa 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/GlobFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/GlobFunctionTest.java
@@ -33,6 +33,7 @@
 import com.google.devtools.build.lib.skyframe.ExternalFilesHelper.ExternalFileAction;
 import com.google.devtools.build.lib.skyframe.GlobValue.InvalidGlobPatternException;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.testutil.ManualClock;
 import com.google.devtools.build.lib.testutil.TestConstants;
 import com.google.devtools.build.lib.util.io.TimestampGranularityMonitor;
@@ -136,7 +137,10 @@
     skyFunctions.put(SkyFunctions.DIRECTORY_LISTING, new DirectoryListingFunction());
     skyFunctions.put(
         SkyFunctions.PACKAGE_LOOKUP,
-        new PackageLookupFunction(deletedPackages, CrossRepositoryLabelViolationStrategy.ERROR));
+        new PackageLookupFunction(
+            deletedPackages,
+            CrossRepositoryLabelViolationStrategy.ERROR,
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD)));
     skyFunctions.put(SkyFunctions.BLACKLISTED_PACKAGE_PREFIXES,
         new BlacklistedPackagePrefixesFunction());
     skyFunctions.put(
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/LocalRepositoryLookupFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/LocalRepositoryLookupFunctionTest.java
index e51aa42..564e466 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/LocalRepositoryLookupFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/LocalRepositoryLookupFunctionTest.java
@@ -28,6 +28,7 @@
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
 import com.google.devtools.build.lib.skyframe.ExternalFilesHelper.ExternalFileAction;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.testutil.FoundationTestCase;
 import com.google.devtools.build.lib.util.io.TimestampGranularityMonitor;
 import com.google.devtools.build.lib.vfs.FileSystemUtils;
@@ -73,7 +74,10 @@
     Map<SkyFunctionName, SkyFunction> skyFunctions = new HashMap<>();
     skyFunctions.put(
         SkyFunctions.PACKAGE_LOOKUP,
-        new PackageLookupFunction(deletedPackages, CrossRepositoryLabelViolationStrategy.ERROR));
+        new PackageLookupFunction(
+            deletedPackages,
+            CrossRepositoryLabelViolationStrategy.ERROR,
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD)));
     skyFunctions.put(
         SkyFunctions.FILE_STATE,
         new FileStateFunction(
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/PackageLookupFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/PackageLookupFunctionTest.java
index c69cddf..0c4c1d4 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/PackageLookupFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/PackageLookupFunctionTest.java
@@ -71,12 +71,13 @@
   private MemoizingEvaluator evaluator;
   private SequentialBuildDriver driver;
   private RecordingDifferencer differencer;
+  private Path emptyPackagePath;
 
   protected abstract CrossRepositoryLabelViolationStrategy crossRepositoryLabelViolationStrategy();
 
   @Before
   public final void setUp() throws Exception {
-    Path emptyPackagePath = rootDirectory.getRelative("somewhere/else");
+    emptyPackagePath = rootDirectory.getRelative("somewhere/else");
     scratch.file("parentpackage/BUILD");
 
     AnalysisMock analysisMock = AnalysisMock.get();
@@ -92,7 +93,10 @@
     Map<SkyFunctionName, SkyFunction> skyFunctions = new HashMap<>();
     skyFunctions.put(
         SkyFunctions.PACKAGE_LOOKUP,
-        new PackageLookupFunction(deletedPackages, crossRepositoryLabelViolationStrategy()));
+        new PackageLookupFunction(
+            deletedPackages,
+            crossRepositoryLabelViolationStrategy(),
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD)));
     skyFunctions.put(
         SkyFunctions.PACKAGE,
         new PackageFunction(null, null, null, null, null, null, null));
@@ -238,7 +242,7 @@
   }
 
   @Test
-  public void testEverythingIsGood() throws Exception {
+  public void testEverythingIsGood_BUILD() throws Exception {
     scratch.file("parentpackage/everythinggood/BUILD");
     PackageLookupValue packageLookupValue = lookupPackage("parentpackage/everythinggood");
     assertTrue(packageLookupValue.packageExists());
@@ -247,6 +251,37 @@
   }
 
   @Test
+  public void testEverythingIsGood_BUILD_bazel() throws Exception {
+    scratch.file("parentpackage/everythinggood/BUILD.bazel");
+    PackageLookupValue packageLookupValue = lookupPackage("parentpackage/everythinggood");
+    assertTrue(packageLookupValue.packageExists());
+    assertEquals(rootDirectory, packageLookupValue.getRoot());
+    assertEquals(BuildFileName.BUILD_DOT_BAZEL, packageLookupValue.getBuildFileName());
+  }
+
+  @Test
+  public void testEverythingIsGood_both() throws Exception {
+    scratch.file("parentpackage/everythinggood/BUILD");
+    scratch.file("parentpackage/everythinggood/BUILD.bazel");
+    PackageLookupValue packageLookupValue = lookupPackage("parentpackage/everythinggood");
+    assertTrue(packageLookupValue.packageExists());
+    assertEquals(rootDirectory, packageLookupValue.getRoot());
+    assertEquals(BuildFileName.BUILD_DOT_BAZEL, packageLookupValue.getBuildFileName());
+  }
+
+  @Test
+  public void testBuildFilesInMultiplePackagePaths() throws Exception {
+    scratch.file(emptyPackagePath.getPathString() + "/foo/BUILD");
+    scratch.file("foo/BUILD.bazel");
+
+    // BUILD file in the first package path should be preferred to BUILD.bazel in the second.
+    PackageLookupValue packageLookupValue = lookupPackage("foo");
+    assertTrue(packageLookupValue.packageExists());
+    assertEquals(emptyPackagePath, packageLookupValue.getRoot());
+    assertEquals(BuildFileName.BUILD, packageLookupValue.getBuildFileName());
+  }
+
+  @Test
   public void testEmptyPackageName() throws Exception {
     scratch.file("BUILD");
     PackageLookupValue packageLookupValue = lookupPackage("");
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/RecursiveFilesystemTraversalFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/RecursiveFilesystemTraversalFunctionTest.java
index 58b31e7..a45d7b1 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/RecursiveFilesystemTraversalFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/RecursiveFilesystemTraversalFunctionTest.java
@@ -37,6 +37,7 @@
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
 import com.google.devtools.build.lib.skyframe.ExternalFilesHelper.ExternalFileAction;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.skyframe.RecursiveFilesystemTraversalValue.ResolvedFile;
 import com.google.devtools.build.lib.skyframe.RecursiveFilesystemTraversalValue.TraversalRequest;
 import com.google.devtools.build.lib.testutil.FoundationTestCase;
@@ -105,7 +106,10 @@
         SkyFunctions.RECURSIVE_FILESYSTEM_TRAVERSAL, new RecursiveFilesystemTraversalFunction());
     skyFunctions.put(
         SkyFunctions.PACKAGE_LOOKUP,
-        new PackageLookupFunction(deletedPackages, CrossRepositoryLabelViolationStrategy.ERROR));
+        new PackageLookupFunction(
+            deletedPackages,
+            CrossRepositoryLabelViolationStrategy.ERROR,
+            ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD)));
     skyFunctions.put(SkyFunctions.BLACKLISTED_PACKAGE_PREFIXES,
         new BlacklistedPackagePrefixesFunction());
     skyFunctions.put(SkyFunctions.PACKAGE,
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java b/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java
index 18f0293..0bd57e2 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java
@@ -52,6 +52,7 @@
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
 import com.google.devtools.build.lib.skyframe.ExternalFilesHelper.ExternalFileAction;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
+import com.google.devtools.build.lib.skyframe.PackageLookupValue.BuildFileName;
 import com.google.devtools.build.lib.testutil.FoundationTestCase;
 import com.google.devtools.build.lib.testutil.TestConstants;
 import com.google.devtools.build.lib.testutil.TestRuleClassProvider;
@@ -187,7 +188,10 @@
                     new PackageFunction(null, null, null, null, null, null, null))
                 .put(
                     SkyFunctions.PACKAGE_LOOKUP,
-                    new PackageLookupFunction(null, CrossRepositoryLabelViolationStrategy.ERROR))
+                    new PackageLookupFunction(
+                        null,
+                        CrossRepositoryLabelViolationStrategy.ERROR,
+                        ImmutableList.of(BuildFileName.BUILD_DOT_BAZEL, BuildFileName.BUILD)))
                 .put(
                     SkyFunctions.WORKSPACE_AST,
                     new WorkspaceASTFunction(TestRuleClassProvider.getRuleClassProvider()))