From #103: it could be annoying to deal with e.g. missing inventory warnings when a package and its documentation is out of your reach. But having warnings is still beneficial. I can see a couple of options that we could consider:

• Provide a directive for suppressing warnings in a specific code example: this would mask other warnings in that code example though.
• Provide configuration to disable extra warnings on intersphinx packages: this will surely mask lots of other warnings as well, and doesn't address the fact that you might not want to define a ref for each local module that can be imported.

Any other options? Personally I don't much care for either, but if I had to pick one it would be suppressing specific examples. At least that way people know that they might have problems and have more manual control over it.