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    <p>One workaround, that allows a <code>Multibinder</code> to be shared across private modules, is to wrap the <code>PrivateModule</code> in an <code>AbstractModule</code> implementation that simply installs the <code>PrivateModule</code> and binds the exposed key to the <code>Multibinder</code></p> <pre><code>import com.google.inject.AbstractModule; import com.google.inject.Exposed; import com.google.inject.Guice; import com.google.inject.Injector; import com.google.inject.Key; import com.google.inject.PrivateModule; import com.google.inject.Provides; import com.google.inject.multibindings.Multibinder; import com.google.inject.name.Named; import com.google.inject.name.Names; import java.util.Set; public class GuiceCircularDependencyTest { public static void main(String[] args) { Injector in = Guice.createInjector(new Owner()); String result = in.getInstance(Key.get(String.class, Names.named("result"))); System.out.println("Result is: " + result); } public static class Owner extends PrivateModule { @Override protected void configure() { Multibinder&lt;String&gt; multi = Multibinder.newSetBinder(binder(), String.class); install(new Integration()); install(new ModuleWrapper&lt;&gt;(new ModuleA(), multi)); install(new ModuleWrapper&lt;&gt;(new ModuleB(), multi)); install(new ModuleWrapper&lt;&gt;(new ModuleC(), multi)); expose(String.class).annotatedWith(Names.named("result")); } } public static class ModuleWrapper&lt;T&gt; extends AbstractModule { private final WrappablePrivateModule&lt;T&gt; inner; private final Multibinder&lt;T&gt; multi; public ModuleWrapper(WrappablePrivateModule&lt;T&gt; inner, Multibinder&lt;T&gt; multi) { this.inner = inner; this.multi = multi; } @Override protected void configure() { install(inner); multi.addBinding().to(inner.getExposedKey()); } } public static abstract class WrappablePrivateModule&lt;T&gt; extends PrivateModule { @Override protected void configure() { } public abstract Key&lt;T&gt; getExposedKey(); } public static class ModuleA extends WrappablePrivateModule&lt;String&gt; { private static final String SUFFIX = "A"; @Override public Key&lt;String&gt; getExposedKey() { return Key.get(String.class, Names.named(SUFFIX)); } @Provides @Exposed @Named(SUFFIX) public String expose(Wrapper prefix) { return prefix + SUFFIX; } } public static class ModuleB extends WrappablePrivateModule&lt;String&gt; { private static final String SUFFIX = "B"; @Override public Key&lt;String&gt; getExposedKey() { return Key.get(String.class, Names.named(SUFFIX)); } @Provides @Exposed @Named(SUFFIX) public String expose(Wrapper prefix) { return prefix + SUFFIX; } } public static class ModuleC extends WrappablePrivateModule&lt;String&gt; { private static final String SUFFIX = "C"; @Override public Key&lt;String&gt; getExposedKey() { return Key.get(String.class, Names.named(SUFFIX)); } @Provides @Exposed @Named(SUFFIX) public String expose(Wrapper prefix) { return prefix + SUFFIX; } } public static class Integration extends PrivateModule { @Override protected void configure() { bind(Wrapper.class).toInstance(new Wrapper("Module")); expose(Wrapper.class); } @Provides @Exposed @Named("result") public String go(Set&lt;String&gt; in) { return in.toString(); } } public static class Wrapper { private final String prefix; public Wrapper(String prefix) { this.prefix = prefix; } @Override public String toString() { return prefix; } } } </code></pre>
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    1. POHow to handle circular dependencies across multiple guice private modules?
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    1. POHow to handle circular dependencies across multiple guice private modules?
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    1. COYup, that's what I had in mind.
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      1. USJohn Ericksen
 

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