Data.Functor.Invariant.TH now derives invmap(2) implementations for empty
data types that are strict in the argument.
When using Data.Functor.Invariant.TH to derive Invariant(2) instances for
data types where the last type variables are at phantom roles, generated
invmap(2) implementations now use coerce for efficiency.
Add Options to Data.Functor.Invariant.TH, along with variants of existing
functions that take Options as an argument. For now, the only configurable
option is whether derived instances for empty data types should use the
EmptyCase extension (this is disabled by default).
0.4.3 [2017.07.31]
Add Invariant(2) instances for Data.Profunctor.Yoneda.Yoneda.
0.4.2 [2017.04.24]
invariant.cabal used to incorrectly state the license was BSD3 when it was
in fact BSD2. This is now fixed.
0.4.1
Fix the Invariant V1 instance so as to seq its argument
Allow building with template-haskell-2.12
0.4
Allow TH derivation of Invariant(2) instances for datatypes containing
unboxed tuple types
Ensure Invariant(2) instances are in-scope when importing
Data.Functor.Invariant
Add Invariant and Invariant2 instances for Kleisli and Cokleisli
Add Category and Arrow-like instances for WrappedProfunctor
0.3.1
Rewrote Data.Functor.Invariant.TH’s type inferencer. This avoids a nasty
GHC 7.8-specific bug involving derived Invariant(2) instances for data
families.
Add Invariant instances for Data.Complex.Complex, Data.Monoid.Product,
and Data.Monoid.Sum
0.3
Require bifunctors-5.2 and profunctors-5.2. Add Invariant(2) instances
for newly introduced datatypes from those packages.
Add ProfunctorFunctor, ProfunctorMonad, ProfunctorComonad, Mapping,
and Traversing instances for WrappedProfunctor
Add StateVar as a dependency. Add Invariant instances for StateVar and
SettableStateVar.
Add Invariant instances for URec (added to GHC.Generics in
base-4.9.0.0)
0.2.2
Add genericInvmap function (and make it the default implementation of
invmap for Invariant instances) on GHC 7.2 or later
Make Tagged instance poly-kinded
0.2.1
Add Foldable and Traversable instances for WrappedFunctor
Fixed build on GHC HEAD
0.2
Support deriving Invariant and Invariant2 instances with Template Haskell
Added invmapFunctor, invmapContravariant, invmap2Bifunctor, and
invmap2Profunctor to make defining Invmap and Invmap2 instances
somewhat easier
Added WrappedFunctor, WrappedContravariant, WrappedBifunctor, and
WrappedProfunctor data types to allow use of invmap and invmap2 for
data types that aren’t Invariant or Invariant2 instances.
Added Invariant instances for lazy ST, ArrowMonad, Handler,
Identity, First, Last, Alt, Proxy, ArgDescr, ArgOrder, and
OptDescr
Added Invariant and Invariant2 instances for data types in the array,
bifunctors, containers, profunctors, semigroups, stm, tagged,
transformers, and unordered-containers libraries
