Name:          multistate
Version:       0.3.0.0
Cabal-Version: >= 1.10
Build-Type:    Simple
license:       BSD3
license-file:  LICENSE
Copyright:     Jan Bracker, Lennart Spitzner
Maintainer:    Lennart Spitzner <lsp@informatik.uni-kiel.de>
Author:        Jan Bracker, Lennart Spitzner
Homepage:      https://github.com/lspitzner/multistate
Bug-reports:   https://github.com/lspitzner/multistate/issues
Stability:     Experimental
category:      Control
tested-with:   GHC == 7.6.3, GHC == 7.8.3, GHC == 7.8.4, GHC == 7.10.0

Synopsis: like mtl's ReaderT/WriterT/StateT, but more than one contained
          value/type.
Description:
  When using multiple Read/Write/State transformers in the same monad stack,
  it becomes necessary to lift the operations in order to affect a specific
  transformer.
  Using heterogenous lists (and all kinds of GHC extensions magic),
  this package provides transformers that remove that necessity:
  MultiReaderT/MultiWriterT/MultiStateT can contain a heterogenous list of
  values.
  .
  See the <https://github.com/lspitzner/multistate README> for
  a longer description.

source-repository head
  type: git
  location: git@github.com:lspitzner/multistate.git

flag build-test
  description: Build the MultiState-test test program
  default: False

flag build-example
  description: Build the MultiState-example example program
  default: False

library {
  default-language:
    Haskell2010
  exposed-modules:
    Data.HList.HList
    Control.Monad.MultiState
    Control.Monad.MultiReader
    Control.Monad.MultiWriter
  other-modules:
  build-depends:
    base         >= 4.6   && <4.9,
    mtl          >= 2.1   && <2.3,
    transformers >= 0.3   && <0.5
  default-extensions:
    GADTs
    TypeFamilies
    MultiParamTypeClasses
    FunctionalDependencies
    FlexibleInstances
    OverlappingInstances
    UndecidableInstances
    TypeOperators
    DataKinds
  ghc-options: -Wall
  hs-source-dirs: src
}

executable multistate-test {
  default-language:
    Haskell2010
  if flag(build-test) {
    buildable: True
    build-depends:
      -- no version constraints necessary, because they are already
      -- given by library
      multistate,
      base,
      transformers
  } else {
    buildable: False
  }
  ghc-options: -Wall
  main-is: Test.hs
  hs-source-dirs: test
}

executable multistate-example {
  default-language:
    Haskell2010
  if flag(build-example) {
    buildable: True
    build-depends:
      -- no version constraints necessary, because they are already
      -- given by library
      multistate,
      base,
      mtl,
      transformers
  } else {
    buildable: False
  }
  main-is: Example.hs
  hs-source-dirs: example
}