name: deriving-compat
version: 0.2.1
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.
.
* In GHC 8.0, deriving @Show@ was changed so that constructor fields
with unlifted types are no longer shown with parentheses, and
the output of showing an unlifted type is suffixed with the same
number of hash signs as the corresponding primitive literals.
.
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
flag base-49
description: Use base-4.9 or later.
default: True
flag new-functor-classes
description: Use a version of transformers or transformers-compat with a
modern-style Data.Functor.Classes module. This flag cannot be
used when building with transformers-0.4, since it comes with
a different version of Data.Functor.Classes.
default: True
library
exposed-modules: Data.Deriving
Data.Foldable.Deriving
Data.Functor.Deriving
Data.Traversable.Deriving
Text.Show.Deriving
other-modules: Data.Deriving.Internal
Data.Functor.Deriving.Internal
Text.Show.Deriving.Internal
Paths_deriving_compat
build-depends: containers >= 0.1 && < 0.6
, ghc-prim
, template-haskell >= 2.5 && < 2.12
if flag(base-49)
build-depends: base >= 4.9 && < 5
, ghc-boot-th
cpp-options: "-DNEW_FUNCTOR_CLASSES"
else
build-depends: base >= 4.3 && < 4.9
if flag(new-functor-classes)
build-depends: transformers (>= 0.2 && < 0.4) || >= 0.5
, transformers-compat >= 0.5
cpp-options: "-DNEW_FUNCTOR_CLASSES"
else
build-depends: transformers == 0.4.*
hs-source-dirs: src
default-language: Haskell2010
ghc-options: -Wall
test-suite spec
type: exitcode-stdio-1.0
main-is: Spec.hs
other-modules: FunctorSpec
ShowSpec
build-depends: base-compat >= 0.8.1 && < 1
, base-orphans >= 0.5 && < 1
, deriving-compat == 0.2.1
, hspec >= 1.8
, QuickCheck >= 2 && < 3
if flag(base-49)
build-depends: base >= 4.9 && < 5
cpp-options: "-DNEW_FUNCTOR_CLASSES"
else
build-depends: base >= 4.3 && < 4.9
if flag(new-functor-classes)
build-depends: transformers (>= 0.2 && < 0.4) || >= 0.5
, transformers-compat >= 0.5
cpp-options: "-DNEW_FUNCTOR_CLASSES"
else
build-depends: transformers == 0.4.*
hs-source-dirs: tests
default-language: Haskell2010
ghc-options: -Wall