Hi all, I am posting the result of solution to make Weld work as JPMS auto module. In this solution I use only module path. I manually create JPMS layer and add all modules to it. For Weld I added the following modules:     <module file="cdi-api-2.0.jar"/>     <module file="javax.annotation-api-1.3.2.jar"/>     <module file="javax.inject-1.jar"/>     <module file="javax.interceptor-api-1.2.jar"/>     <module file="jboss-classfilewriter-1.2.2.Final.jar"/>     <module file="jboss-logging-3.2.1.Final.jar"/>     <module file="guava-18.0.jar"/>     <module file="weld-se-core-3.0.4.Final.jar"/>     <module file="weld-environment-common-3.0.4.Final.jar"/>     <module file="weld-core-impl-3.0.4.Final.jar"/>     <module file="weld-spi-3.0.SP3.jar"/>     <module file="weld-api-3.0.SP3.jar"/>     <module file="jandex-2.0.5.Final.jar"/> Note, that jandex is 2.0.5 but not 2.0.3 as 2.0.3 doesn't work well with java9. Besides Weld modules I have two modules - in beanModule( here I have my cdi beans + beans.xml) and serverModule (here I create Weld etc). In serverModule I have the following code: Weld builder = new Weld()                 .property("org.jboss.weld.construction.relaxed", true)                 .setClassLoader(this.getClass().getClassLoader())                 .setResourceLoader(new ResourceLoaderImpl()); WeldContainer container = builder.initialize(); BeanManager bm = container.getBeanManager(); This is my ResourceLoaderImpl: public class ResourceLoaderImpl implements ResourceLoader {     private static final String ERROR_LOADING_CLASS = "Error loading class ";     @Override     public Class<?> classForName(String name) {         try {             return Class.forName(name);         } catch (ClassNotFoundException e) {             throw new ResourceLoadingException(ERROR_LOADING_CLASS + name, e);         } catch (LinkageError e) {             throw new ResourceLoadingException(ERROR_LOADING_CLASS + name, e);         } catch (TypeNotPresentException e) {             throw new ResourceLoadingException(ERROR_LOADING_CLASS + name, e);         }     }     @Override     public URL getResource(String name) {         try {             Module module = this.getClass().getModule().getLayer().findModule("beanModule").orElse(null);             ModuleReference reference = getReference(module);             Optional<URI> uri = reference.open().find(name);             if (uri.isPresent()) {                 return uri.get().toURL();             } else {                 return null;             }         } catch (MalformedURLException ex) {             ex.printStackTrace();         } catch (IOException ex) {             ex.printStackTrace();         }         return null;     }     @Override     public Collection<URL> getResources(String name) {         List<URL> result = new ArrayList<>();        //HERE WE NEED MODULE ITERATION         URL url = this.getResource(name);         if (url != null) {             result.add(url);         }         return result;     }     @Override     public void cleanup() {  } } In beanModule in module-info I open packages, that contains beans. The solution WORKS, via BeanManager I can get whatever bean I need. The only problem is that I can't understand what I should return in getResouce(String) if I have many modules - what module first I should return? For example, when weld calls getResource("META-INF/beans.xml") - ? It would be very interesting to to get some comments. -- Best regards, Alex