    {-# LANGUAGE DeriveDataTypeable #-}
    {-# LANGUAGE DeriveGeneric #-}

    module Distribution.Types.ModuleReexport
      ( ModuleReexport (..)
      ) where

    import Distribution.Compat.Prelude
    import Prelude ()

    import Distribution.ModuleName
    import Distribution.Parsec
    import Distribution.Pretty
    import Distribution.Types.PackageName

    import qualified Distribution.Compat.CharParsing as P
    import qualified Text.PrettyPrint as Disp

    -- -----------------------------------------------------------------------------
    -- Module re-exports

    data ModuleReexport = ModuleReexport
      { ModuleReexport -> Maybe PackageName
    moduleReexportOriginalPackage :: Maybe PackageName
      , ModuleReexport -> ModuleName
    moduleReexportOriginalName :: ModuleName
      , ModuleReexport -> ModuleName
    moduleReexportName :: ModuleName
      }
      deriving (ModuleReexport -> ModuleReexport -> Bool
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    instance Binary ModuleReexport
    instance Structured ModuleReexport
    instance NFData ModuleReexport where rnf :: ModuleReexport -> ()
    rnf = ModuleReexport -> ()
    forall a. (Generic a, GNFData (Rep a)) => a -> ()
    genericRnf

    instance Pretty ModuleReexport where
      pretty :: ModuleReexport -> Doc
    pretty (ModuleReexport Maybe PackageName
    mpkgname ModuleName
    origname ModuleName
    newname) =
        Doc -> (PackageName -> Doc) -> Maybe PackageName -> Doc
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    instance Parsec ModuleReexport where
      parsec :: forall (m :: * -> *). CabalParsing m => m ModuleReexport
    parsec = do
        mpkgname <- m PackageName -> m (Maybe PackageName)
    forall (f :: * -> *) a. Alternative f => f a -> f (Maybe a)
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    ':')
        origname <- parsec
        newname <- P.option origname $ P.try $ do
          P.spaces
          _ <- P.string "as"
          P.spaces
          parsec
        return (ModuleReexport mpkgname origname newname)