module Development.Shake.Rules.Rerun(
defaultRuleRerun, alwaysRerun
) where
import Development.Shake.Core
import Development.Shake.Classes
newtype AlwaysRerunQ = AlwaysRerunQ ()
deriving (Typeable,Eq,Hashable,Binary,NFData)
instance Show AlwaysRerunQ where show _ = "alwaysRerun"
newtype AlwaysRerunA = AlwaysRerunA ()
deriving (Typeable,Hashable,Binary,NFData)
instance Show AlwaysRerunA where show _ = "<none>"
instance Eq AlwaysRerunA where a == b = False
instance Rule AlwaysRerunQ AlwaysRerunA where
storedValue _ = return Nothing
alwaysRerun :: Action ()
alwaysRerun = do AlwaysRerunA _ <- apply1 $ AlwaysRerunQ (); return ()
defaultRuleRerun :: Rules ()
defaultRuleRerun = defaultRule $ \AlwaysRerunQ{} -> Just $ return $ AlwaysRerunA()