For a variety of reasons, I have a nested bean archive available in my jar file under FOOBAR/classes. This means there is a FOOBAR/classes/META-INF/beans.xml file in there.
Weld SE properly finds the beans.xml there, but when the FileSystemBeanArchiveHandler class goes to do things with it, it is skipped due to a trailing slash equality comparison issue.
In FileSystemBeanArchiveHandler.java, line 125 and following, it reads:
At line 133 (marked with // XXXX above), the zipEntry's name will (in my case) end with a trailing slash, whereas the nestedEntryName will not end with a trailing slash. This means that only nested jar files, not nested archive directory roots, can be detected.