Re: How to disable warning for "export item 'module ...' exports nothing"?

Sean Leather wrote:

Hi,

I have a module A that re-exports module B, and module B contains only class instances. Since I'm using -Wall, I get this warning about module B exporting nothing. Is there a way to disable this particular warning, since it is unnecessary in this case? No mailing list messages or GHC documentation has told me what to do.

Well, the warning is right that you don't need to re-export module B: instances are implicitly exported. So you could just remove the export of "module B", unless there's a reason to export it (such as, you might add some exported functions or data types to it later) -Isaac