I'm sure I must just be confused about something simple. I have a standard h2xs-generated (unmodified) Makefile.PL. I've added submodules in the ./lib/ directory by adding .pm files.
The submodules do indeed build and test successfully, but they don't get included in the "make tardist" tarball.
Surely someone knows what trivial thing I'm missing! Why do the build and test phases find and use the files, but tardist not?