You can install this library from Hackage via cabal install conf
This package is designed to allow you to create configuration files with declarative Haskell and parse the values back into Haskell code. The benefit here is to have a configuration file in Haskell that does not have to be recompiled - it is interpreted/parsed at runtime in a type-safe manner.
Example usage:
-- /path/to/my-config.hs
foo = ["bar", "baz"]
spam = Eggs-- Application source
import Data.Conf
import Data.Maybe
data Spam = Eggs | Parrot | SomethingEntirelyDifferent
deriving (Show, Read)
getSpam :: Conf -> Spam
getSpam = fromMaybe SomethingEntirelyDifferent . getConf "spam"
getFoo :: Conf -> Maybe Int
getFoo = getConf "foo"
main = do
conf <- readConf "my-config.hs"
print $ getSpam conf -- Output: Eggs
print $ getFoo conf -- Output: Nothingcabal sandbox init # If you haven't already
cabal install -j --dependencies-only
cabal buildcabal sandbox init # If you haven't already
cabal install -j --enable-tests --dependencies-only
cabal test
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