Re: Haskell Platform Proposal: add transformers and revise the mtl package to depend on it

+1 for the proposal in general On 16 September 2010 23:47, Felipe Lessa wrote:

On Thu, Sep 16, 2010 at 11:42 AM, Duncan Coutts wrote:

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This is probably the last chance we have to deprecate the name 'mtl'.

Is this actually a problem?

Not really.  It's just for consistency.

I like Felipe's idea of deprecating the name mtl (in the form of the not-yet-existing library mtl-2) in favour of the existing (name+library) monads-fd. Many actively maintained packages already have a transformers+monads-fd dependency anyway. I'd expect the changes of this proposal will take about a year or so to shake out (eg. by the time the change is reflected in Debian stable / on random hackers' machines), and introducing the mtl-2 name would encourage maintainers to have (mtl-2 || monads-fd) dependencies in cabal files during that time. I think it'd be neater to just stick to the existing monads-fd name+library. (Also I think monads-fd is a more descriptive name than mtl, but perhaps I just don't like TLAs :) Conrad.