diff --git a/src/main/java/com/google/devtools/build/lib/analysis/BUILD b/src/main/java/com/google/devtools/build/lib/analysis/BUILD
index 4e63fef..dca5e68 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/BUILD
+++ b/src/main/java/com/google/devtools/build/lib/analysis/BUILD
@@ -2787,6 +2787,7 @@
         "//src/main/java/com/google/devtools/build/lib/skyframe:build_configuration",
         "//src/main/java/com/google/devtools/build/lib/skyframe:configured_target_and_data",
         "//src/main/java/com/google/devtools/build/lib/skyframe:configured_target_key",
+        "//src/main/java/com/google/devtools/build/lib/skyframe:prerequisite_package_function",
         "//third_party:guava",
         "//third_party:jsr305",
     ],
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/TransitiveDependencyState.java b/src/main/java/com/google/devtools/build/lib/analysis/TransitiveDependencyState.java
index 8a015c7..fa489eb 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/TransitiveDependencyState.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/TransitiveDependencyState.java
@@ -29,6 +29,7 @@
 import com.google.devtools.build.lib.skyframe.BuildConfigurationKey;
 import com.google.devtools.build.lib.skyframe.ConfiguredTargetAndData;
 import com.google.devtools.build.lib.skyframe.ConfiguredTargetKey;
+import com.google.devtools.build.lib.skyframe.PrerequisitePackageFunction;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
@@ -38,16 +39,6 @@
 
 /** Groups state associated with transitive dependencies. */
 public final class TransitiveDependencyState {
-  /**
-   * Directly retrieves packages of dependencies from Skyframe without adding a dependency edge.
-   *
-   * <p>See further discussion at {@link #prerequisitePackages}.
-   */
-  public interface PrerequisitePackageFunction {
-    @Nullable
-    Package getExistingPackage(PackageIdentifier id) throws InterruptedException;
-  }
-
   private final NestedSetBuilder<Cause> transitiveRootCauses;
 
   /**
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/AspectFunction.java b/src/main/java/com/google/devtools/build/lib/skyframe/AspectFunction.java
index 3db4b9c..9902f3f 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/AspectFunction.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/AspectFunction.java
@@ -43,7 +43,6 @@
 import com.google.devtools.build.lib.analysis.TargetAndConfiguration;
 import com.google.devtools.build.lib.analysis.ToolchainCollection;
 import com.google.devtools.build.lib.analysis.TransitiveDependencyState;
-import com.google.devtools.build.lib.analysis.TransitiveDependencyState.PrerequisitePackageFunction;
 import com.google.devtools.build.lib.analysis.config.BuildConfigurationValue;
 import com.google.devtools.build.lib.analysis.config.ConfigConditions;
 import com.google.devtools.build.lib.analysis.config.DependencyEvaluationException;
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/BUILD b/src/main/java/com/google/devtools/build/lib/skyframe/BUILD
index 1528b5a..1b7ae1b 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/BUILD
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/BUILD
@@ -158,6 +158,7 @@
         ":prepare_deps_of_targets_under_directory_value",
         ":prepare_test_suites_under_directory_function",
         ":prepare_test_suites_under_directory_value",
+        ":prerequisite_package_function",
         ":progress_event_suppressing_environment",
         ":progress_suppressing_event_handler",
         ":recursive_filesystem_traversal",
@@ -241,7 +242,6 @@
         "//src/main/java/com/google/devtools/build/lib/analysis:config/fragment_factory",
         "//src/main/java/com/google/devtools/build/lib/analysis:config/fragment_options",
         "//src/main/java/com/google/devtools/build/lib/analysis:config/invalid_configuration_exception",
-        "//src/main/java/com/google/devtools/build/lib/analysis:config/optioninfo",
         "//src/main/java/com/google/devtools/build/lib/analysis:config/starlark_defined_config_transition",
         "//src/main/java/com/google/devtools/build/lib/analysis:config/starlark_transition_cache",
         "//src/main/java/com/google/devtools/build/lib/analysis:config/toolchain_type_requirement",
@@ -1976,6 +1976,16 @@
 )
 
 java_library(
+    name = "prerequisite_package_function",
+    srcs = ["PrerequisitePackageFunction.java"],
+    deps = [
+        "//src/main/java/com/google/devtools/build/lib/cmdline",
+        "//src/main/java/com/google/devtools/build/lib/packages",
+        "//third_party:jsr305",
+    ],
+)
+
+java_library(
     name = "process_package_directory",
     srcs = ["ProcessPackageDirectory.java"],
     deps = [
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/ConfiguredTargetFunction.java b/src/main/java/com/google/devtools/build/lib/skyframe/ConfiguredTargetFunction.java
index 6224ff7..9d79bd6 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/ConfiguredTargetFunction.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/ConfiguredTargetFunction.java
@@ -35,7 +35,6 @@
 import com.google.devtools.build.lib.analysis.ResolvedToolchainContext;
 import com.google.devtools.build.lib.analysis.TargetAndConfiguration;
 import com.google.devtools.build.lib.analysis.ToolchainCollection;
-import com.google.devtools.build.lib.analysis.TransitiveDependencyState.PrerequisitePackageFunction;
 import com.google.devtools.build.lib.analysis.config.BuildConfigurationValue;
 import com.google.devtools.build.lib.analysis.config.ConfigConditions;
 import com.google.devtools.build.lib.analysis.configuredtargets.RuleConfiguredTarget;
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/DependencyResolver.java b/src/main/java/com/google/devtools/build/lib/skyframe/DependencyResolver.java
index 2f72d8f..568eb39 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/DependencyResolver.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/DependencyResolver.java
@@ -36,7 +36,6 @@
 import com.google.devtools.build.lib.analysis.ToolchainCollection;
 import com.google.devtools.build.lib.analysis.ToolchainContext;
 import com.google.devtools.build.lib.analysis.TransitiveDependencyState;
-import com.google.devtools.build.lib.analysis.TransitiveDependencyState.PrerequisitePackageFunction;
 import com.google.devtools.build.lib.analysis.config.BuildConfigurationValue;
 import com.google.devtools.build.lib.analysis.config.BuildOptions;
 import com.google.devtools.build.lib.analysis.config.BuildOptionsView;
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/PrerequisitePackageFunction.java b/src/main/java/com/google/devtools/build/lib/skyframe/PrerequisitePackageFunction.java
new file mode 100644
index 0000000..857042f
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/PrerequisitePackageFunction.java
@@ -0,0 +1,30 @@
+// Copyright 2023 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package com.google.devtools.build.lib.skyframe;
+
+import com.google.devtools.build.lib.cmdline.PackageIdentifier;
+import com.google.devtools.build.lib.packages.Package;
+import javax.annotation.Nullable;
+
+/**
+ * Looks up previously loaded packages.
+ *
+ * <p>Used by {@link ConfiguredTargetFunction} to lookup packages of dependencies.
+ */
+public interface PrerequisitePackageFunction {
+
+  /** Directly retrieves packages of dependencies from Skyframe without adding a dependency edge. */
+  @Nullable // Null if the package not available.
+  Package getExistingPackage(PackageIdentifier id) throws InterruptedException;
+}