Message Title

The plugin fails when trying to resolve inter-module dependencies, which is normal since those modules haven't been built yet when we execute the plugin. There are options in the maven-dependency-plugin to exclude some dependencies, but it's not the maven-dependency-plugin that triggers this issue.
Actually, and quite amazingly, it seems executing the maven-dependency-plugin requires to resolve dependencies first. Yes, you understand correctly. The MojoExecutor tries to resolve dependencies before the plugin is even executed.
So even though we can tune the behavior of the maven-dependency-plugin to exclude some artifacts from the resolution, the full resolution is automatically performed by maven first, and obviously it fails.

If you still can't believe it, here's the stacktrace. You'll notice that dependency resolution is requested by the MojoExecutor, not by the maven-dependency-plugin.

[ERROR] Failed to execute goal on project hibernate-search-performance: Could not resolve dependencies for project org.hibernate:hibernate-search-performance:jar:5.8.0-SNAPSHOT: Cannot access jboss-public-repository-group (https://repository.jboss.org/nexus/content/groups/public-jboss/) in offline mode and the artifact org.hibernate:hibernate-search-integrationtest-wildfly:jar:tests:5.8.0-SNAPSHOT has not been downloaded from it before. -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal on project hibernate-search-performance: Could not resolve dependencies for project org.hibernate:hibernate-search-performance:jar:5.8.0-SNAPSHOT: Cannot access jboss-public-repository-group (https://repository.jboss.org/nexus/content/groups/public-jboss/) in offline mode and the artifact org.hibernate:hibernate-search-integrationtest-wildfly:jar:tests:5.8.0-SNAPSHOT has not been downloaded from it before.
	at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(LifecycleDependencyResolver.java:221)
	at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies(LifecycleDependencyResolver.java:127)
	at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved(MojoExecutor.java:245)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:199)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
	at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.project.DependencyResolutionException: Could not resolve dependencies for project org.hibernate:hibernate-search-performance:jar:5.8.0-SNAPSHOT: Cannot access jboss-public-repository-group (https://repository.jboss.org/nexus/content/groups/public-jboss/) in offline mode and the artifact org.hibernate:hibernate-search-integrationtest-wildfly:jar:tests:5.8.0-SNAPSHOT has not been downloaded from it before.
	at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:211)
	at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(LifecycleDependencyResolver.java:195)
	... 23 more
Caused by: org.eclipse.aether.resolution.DependencyResolutionException: Cannot access jboss-public-repository-group (https://repository.jboss.org/nexus/content/groups/public-jboss/) in offline mode and the artifact org.hibernate:hibernate-search-integrationtest-wildfly:jar:tests:5.8.0-SNAPSHOT has not been downloaded from it before.
	at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveDependencies(DefaultRepositorySystem.java:384)
	at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:205)
	... 24 more
Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Cannot access jboss-public-repository-group (https://repository.jboss.org/nexus/content/groups/public-jboss/) in offline mode and the artifact org.hibernate:hibernate-search-integrationtest-wildfly:jar:tests:5.8.0-SNAPSHOT has not been downloaded from it before.
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:444)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:246)
	at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveDependencies(DefaultRepositorySystem.java:367)
	... 25 more
Caused by: org.eclipse.aether.transfer.ArtifactNotFoundException: Cannot access jboss-public-repository-group (https://repository.jboss.org/nexus/content/groups/public-jboss/) in offline mode and the artifact org.hibernate:hibernate-search-integrationtest-wildfly:jar:tests:5.8.0-SNAPSHOT has not been downloaded from it before.
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:391)
	... 27 more
Caused by: org.eclipse.aether.transfer.RepositoryOfflineException: Cannot access jboss-public-repository-group (https://repository.jboss.org/nexus/content/groups/public-jboss/) in offline mode
	at org.eclipse.aether.internal.impl.DefaultOfflineController.checkOffline(DefaultOfflineController.java:72)
	at org.eclipse.aether.internal.impl.Utils.checkOffline(Utils.java:115)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:387)
	... 27 more