Congratulations to the new MTL maintainers! Le 07/05/2022 à 22:37, Emily Pillmore a écrit :

Hello Everyone,

mtl-2.3 has been released. This release marks the first major version for the library in a long time, and addresses some longstanding issues that have taken years to fix. As a result, this will be a *breaking update* for many. Please review the following changelog notes:

* Added instances for|Control.Monad.Trans.Writer.CPS|and|Control.Monad.Trans.RWS.CPS|from|transformers|0.5.6 and add|Control.Monad.Writer.CPS|and|Control.Monad.RWS.CPS|. * |Control.Monad.Cont|now re-exports|evalCont|and|evalContT|. * Add|tryError|,|withError|,|handleError|, and|mapError|to|Control.Monad.Error.Class|, and re-export from|Control.Monad.Except|. * Remove|Control.Monad.List|and|Control.Monad.Error|. * Remove instances of deprecated|ListT|and|ErrorT|. * Remove re-exports of|Error|. * Add instances for|Control.Monad.Trans.Accum|and|Control.Monad.Trans.Select http://control.monad.trans.select/|. * Require GHC 8.6 or higher, and|cabal-install|3.0 or higher. * Require|transformers-0.5.6|or higher. * Add|Control.Monad.Accum|for the|MonadAccum|type class, as well as the|LiftingAccum|deriving helper. * Add|Control.Monad.Select http://control.monad.select/|for the|MonadSelect|type class, as well as the|LiftingSelect|deriving helper.

A big thank you to all contributors and commentators, and a special thanks to Koz for picking up maintenance so swiftly.

Happy hacking, Emily

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