BSD-3-Clause licensed by Gabriella Gonzalez
This version can be pinned in stack with:mmorph-1.2.0@sha256:df9b213ec18f811cb3137b478d148f3f1680ee43f841cb775835fa282fdb0295,1083
Module documentation for 1.2.0
Used by 22 packages in
nightly-2025-02-17(full list with versions):
alternators,
automaton,
bound,
ChannelT,
essence-of-live-coding,
functor-combinators,
gitlib-libgit2,
hedgehog,
hreader,
list-t,
list-transformer,
log-base,
lucid,
monad-extras,
monad-resumption,
pipes,
servant,
streaming,
streaming-bytestring,
tardis,
urlpath,
xmlbf This library provides monad morphism utilities, most commonly used
for manipulating monad transformer stacks.
1.2.0
- BREAKING CHANGE: Remove instances for
ErrorT and ListT
- These types are deprecated
1.1.5
- Fix build failures on GHC 8.4 and 8.6
- Add support for safe Haskell
- Specifically, this marks the
Control.Monad.Trans.Compose module as
Trustworthy
- The change in 1.1.4 to use
GeneralizedNewtypeDeriving meant that the
Control.Monad.Trans.Compose module was no longer inferred as safe
- Restore
Traversable instance removed by mistake in 1.1.4
1.1.4 (Blacklisted)
- Unintentional removal of
Traversable instance for ComposeT
- This missing instance is restored in 1.1.5
- This is the reason why the 1.1.4 release is blacklisted
- Fix
MonadFail-related code to work for GHCJS
- The
MonadRWS instance for ComposeT has a more flexible constraint
- The constraint is now
MonadReader r (f (g m)), MonadWriter w (f (g m)), MonadState s (f (g m))
instead of MonadRWS r w s (f g m)
- This loosening of the constraint is backwards-compatible
1.1.3
- Add an
MFunctor instance for ComposeT for GHC >= 8.6
- Add GHC 8.8 support
1.1.2
- Conditionally disable
Polykinds to support older versions of GHC
1.1.1
- Increase upper bound on
transformers-compat
1.1.0
- BREAKING CHANGE: Enable
PolyKinds
- This should in theory be a non-breaking change, but due to a bug in
GHC 8.0.1 and kind inference ambiguities I’m marking this as a breaking
change
