diff --git a/core-it-suite/src/test/java/org/apache/maven/it/IntegrationTestSuite.java b/core-it-suite/src/test/java/org/apache/maven/it/IntegrationTestSuite.java
index 33dc60b7c..11981335f 100644
--- a/core-it-suite/src/test/java/org/apache/maven/it/IntegrationTestSuite.java
+++ b/core-it-suite/src/test/java/org/apache/maven/it/IntegrationTestSuite.java
@@ -107,6 +107,7 @@ public static Test suite()
// -------------------------------------------------------------------------------------------------------------
// suite.addTestSuite( MavenIT0108SnapshotUpdateTest.class ); -- MNG-3137
+ suite.addTestSuite( MavenITmng6972AllowAccessToGraphPackageTest.class );
suite.addTestSuite( MavenITmng5760ResumeFeatureTest.class );
suite.addTestSuite( MavenITmng6656BuildConsumer.class );
suite.addTestSuite( MavenITmng6562WarnDefaultBindings.class );
diff --git a/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng6972AllowAccessToGraphPackageTest.java b/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng6972AllowAccessToGraphPackageTest.java
new file mode 100644
index 000000000..88e8bf2fc
--- /dev/null
+++ b/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng6972AllowAccessToGraphPackageTest.java
@@ -0,0 +1,70 @@
+package org.apache.maven.it;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+
+import java.io.File;
+
+import org.apache.maven.it.util.ResourceExtractor;
+
+/**
+ * This is a test for MNG-6972.
+ */
+public class MavenITmng6972AllowAccessToGraphPackageTest
+extends AbstractMavenIntegrationTestCase
+{
+
+ public MavenITmng6972AllowAccessToGraphPackageTest()
+ {
+ super("[3.7.0,)");
+ }
+
+ public void testitMNG6972 ()
+ throws Exception
+ {
+
+ // The testdir is computed from the location of this file.
+ final File testDir = ResourceExtractor.simpleExtractResources(getClass(), "/mng-6972-allow-access-to-graph-package");
+
+ Verifier verifier;
+
+ /*
+ * We must first make sure that any artifact created
+ * by this test has been removed from the local
+ * repository. Failing to do this could cause
+ * unstable test results. Fortunately, the verifier
+ * makes it easy to do this.
+ */
+ verifier = new Verifier( testDir.getAbsolutePath() );
+ verifier.deleteArtifact("mng-6972-allow-access-to-graph-package", "build-plugin", "1.0", "jar");
+ verifier.deleteArtifact("mng-6972-allow-access-to-graph-package", "using-module", "1.0", "jar");
+
+ verifier = new Verifier( new File( testDir.getAbsolutePath(), "build-plugin" ).getAbsolutePath() );
+ verifier.getSystemProperties().put("maven.multiModuleProjectDirectory", testDir.getAbsolutePath());
+ verifier.executeGoal( "install" );
+ verifier.verifyErrorFreeLog();
+ verifier.resetStreams();
+
+ verifier = new Verifier( new File( testDir.getAbsolutePath(), "using-module" ).getAbsolutePath() );
+ verifier.getSystemProperties().put("maven.multiModuleProjectDirectory", testDir.getAbsolutePath());
+ verifier.executeGoal( "install" );
+ verifier.verifyErrorFreeLog();
+ verifier.resetStreams();
+ }
+}
diff --git a/core-it-suite/src/test/resources/mng-6972-allow-access-to-graph-package/build-plugin/pom.xml b/core-it-suite/src/test/resources/mng-6972-allow-access-to-graph-package/build-plugin/pom.xml
new file mode 100644
index 000000000..01c8433f1
--- /dev/null
+++ b/core-it-suite/src/test/resources/mng-6972-allow-access-to-graph-package/build-plugin/pom.xml
@@ -0,0 +1,67 @@
+
+
+
+
+
+ 4.0.0
+
+ mng-6972-allow-access-to-graph-package
+ build-plugin
+ 1.0
+
+
+ UTF-8
+ 1.8
+ ${maven.compiler.source}
+
+ 1.5.5
+ 3.3.1
+
+
+
+
+ org.apache.maven
+ maven-core
+ ${maven-version}
+ provided
+
+
+ org.codehaus.plexus
+ plexus-component-annotations
+ ${plexus-component.version}
+
+
+
+
+
+ org.codehaus.plexus
+ plexus-component-metadata
+ ${plexus-component.version}
+
+
+
+ generate-metadata
+
+
+
+
+
+
+
diff --git a/core-it-suite/src/test/resources/mng-6972-allow-access-to-graph-package/build-plugin/src/main/java/com/example/BuildExtensionUsingGraphPackage.java b/core-it-suite/src/test/resources/mng-6972-allow-access-to-graph-package/build-plugin/src/main/java/com/example/BuildExtensionUsingGraphPackage.java
new file mode 100644
index 000000000..a81d0231c
--- /dev/null
+++ b/core-it-suite/src/test/resources/mng-6972-allow-access-to-graph-package/build-plugin/src/main/java/com/example/BuildExtensionUsingGraphPackage.java
@@ -0,0 +1,43 @@
+package com.example;
+
+import java.lang.IllegalStateException;
+import java.util.Objects;
+
+import org.apache.maven.AbstractMavenLifecycleParticipant;
+import org.apache.maven.MavenExecutionException;
+import org.apache.maven.execution.MavenSession;
+import org.apache.maven.execution.ProjectDependencyGraph;
+import org.apache.maven.graph.GraphBuilder;
+import org.apache.maven.model.building.ModelProblem;
+import org.apache.maven.model.building.Result;
+import org.apache.maven.project.MavenProject;
+import org.codehaus.plexus.component.annotations.Component;
+import org.codehaus.plexus.component.annotations.Requirement;
+
+
+@Component(role = AbstractMavenLifecycleParticipant.class)
+public class BuildExtensionUsingGraphPackage extends AbstractMavenLifecycleParticipant {
+
+ @Requirement(hint = GraphBuilder.HINT)
+ private GraphBuilder graphBuilder;
+
+ @Override
+ public void afterProjectsRead(final MavenSession session) throws MavenExecutionException {
+ Objects.requireNonNull(graphBuilder, "graphBuilder should be available in build extension");
+
+ Result graphResult = graphBuilder.build(session);
+ Objects.requireNonNull(graphResult, "graphResult should have been built");
+
+ for ( ModelProblem problem : graphResult.getProblems() )
+ {
+ if ( problem.getSeverity() == ModelProblem.Severity.WARNING )
+ {
+ throw new IllegalStateException( "unexpected WARNING found: " + problem.toString() );
+ }
+ else
+ {
+ throw new IllegalStateException( "unexpected Problem found: " + problem.toString() );
+ }
+ }
+ }
+}
diff --git a/core-it-suite/src/test/resources/mng-6972-allow-access-to-graph-package/using-module/pom.xml b/core-it-suite/src/test/resources/mng-6972-allow-access-to-graph-package/using-module/pom.xml
new file mode 100644
index 000000000..a91056bcb
--- /dev/null
+++ b/core-it-suite/src/test/resources/mng-6972-allow-access-to-graph-package/using-module/pom.xml
@@ -0,0 +1,38 @@
+
+
+
+
+
+ 4.0.0
+
+ mng-6972-allow-access-to-graph-package
+ using-module
+ 1
+
+
+
+
+ mng-6972-allow-access-to-graph-package
+ build-plugin
+ 1.0
+
+
+
+