name: deriving-compat
version: 0.2
synopsis: Backports of GHC deriving extensions
description: Provides Template Haskell functions that mimic deriving
extensions that were introduced or modified in recent versions
of GHC. Currently, the following extensions are covered:
.
* @DeriveFoldable@
.
* @DeriveFunctor@
.
* @DeriveTraversable@
.
The following changes have been backported:
.
* In GHC 8.0, @DeriveFoldable@ was changed to allow folding
over data types with existential constraints.
.
* In GHC 8.0, @DeriveFoldable@ and @DeriveTraversable@ were
changed so as not to generate superfluous @mempty@ or @pure@
expressions in generated code. As a result, this allows
deriving @Traversable@ instances for datatypes with unlifted
argument types.
.
Note that some recent GHC extensions are not covered by this package:
.
* @DeriveGeneric@, which was introducted in GHC 7.2 for deriving
@Generic@ instances, and modified in GHC 7.6 to allow derivation
of @Generic1@ instances. Use @Generics.Deriving.TH@ from
@<http://hackage.haskell.org/package/generic-deriving generic-deriving>@
to derive @Generic(1)@ using Template Haskell.
.
* @DeriveLift@, which was introduced in GHC 8.0 for deriving
@Lift@ instances. Use @Language.Haskell.TH.Lift@ from
@<http://hackage.haskell.org/package/th-lift th-lift>@
to derive @Lift@ using Template Haskell.
homepage: https://github.com/haskell-compat/deriving-compat
bug-reports: https://github.com/haskell-compat/deriving-compat/issues
license: BSD3
license-file: LICENSE
author: Ryan Scott
maintainer: Ryan Scott <ryan.gl.scott@gmail.com>
stability: Experimental
copyright: (C) 2015-2016 Ryan Scott
category: Compatibility
build-type: Simple
extra-source-files: CHANGELOG.md, README.md
tested-with: GHC == 7.0.4
, GHC == 7.2.2
, GHC == 7.4.2
, GHC == 7.6.3
, GHC == 7.8.4
, GHC == 7.10.3
, GHC == 8.0.1
cabal-version: >=1.10
source-repository head
type: git
location: https://github.com/haskell-compat/deriving-compat
library
exposed-modules: Data.Deriving
Data.Foldable.Deriving
Data.Functor.Deriving
Data.Traversable.Deriving
other-modules: Data.Deriving.Internal
Data.Functor.Deriving.Internal
Paths_deriving_compat
build-depends: base >= 4.3 && < 5
, containers >= 0.1 && < 0.6
, ghc-prim
, template-haskell >= 2.5 && < 2.12
hs-source-dirs: src
default-language: Haskell2010
ghc-options: -Wall
test-suite spec
type: exitcode-stdio-1.0
main-is: Spec.hs
other-modules: DerivingSpec
build-depends: base >= 4.3 && < 5
, base-compat >= 0.8.1 && < 1
, base-orphans >= 0.5 && < 1
, deriving-compat == 0.2
, hspec >= 1.8
, QuickCheck >= 2 && < 3
, transformers >= 0.2
, transformers-compat >= 0.3
hs-source-dirs: tests
default-language: Haskell2010
ghc-options: -Wall