Merge either into transformers

Ross Paterson R.Paterson at
Tue Feb 25 17:40:05 UTC 2014

On Tue, Feb 25, 2014 at 12:33:27PM +0200, Roman Cheplyaka wrote:
> I proposed to merge either into transformers more than a year ago[1],
> and everyone seemed to agree. Could you please do it?
> [1]:

Not everyone agreed when we discussed this last August.  My proposal then
was to introduce a new constructor ExceptT on the same pattern as ReaderT,
etc, and to deprecate ErrorT, and that's what I intend to include in the
next major release, after GHC 7.8 comes out.

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