Re: RFC: Adding support for an API-"since"-version-attribute to Haddock?

On Tue, Sep 4, 2012 at 3:56 AM, Herbert Valerio Riedel wrote:

I've been wondering whether it might be useful to add a feature to Haddock similar to what can be found in other API documentation systems, specifically an optional parseable "since"-attribute, declaring the last package version when the associated definition/symbol was introduced or its semantics modified.

I think it would be very useful. We don't have any way of specifying identifier-level attributes right now that I know of, and such a capability would be helpful beyond just this use, too.