On Fri, Feb 25, 2005 at 10:49:19AM -0000, Simon Marlow wrote:

On 24 February 2005 17:53, Thomas Jäger wrote:

...

Also, a Typeable instance of Data.Queue.Queue seems to be missing.

Done.

BTW, what about the discussed idea of detaching 'deriving' from the datatype definition? I don't remember if it was proposed before, but it would be nice if two or more such 'deriving' declarations could be coalesced, if there was no conflicting hand-made instance declaration. This way, Thomas could simply write instance Typable Data.Queue.Queue derived and his program wouldn't break if you added 'deriving Typable' to Queue in a newer version of GHC. Hmmm, I fear this could be impossible to do safely in general... Best regards Tomasz