diff options
Diffstat (limited to 'src/Propellor/Property.hs')
| -rw-r--r-- | src/Propellor/Property.hs | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/Propellor/Property.hs b/src/Propellor/Property.hs index af36ed58..fe314941 100644 --- a/src/Propellor/Property.hs +++ b/src/Propellor/Property.hs @@ -16,6 +16,7 @@ module Propellor.Property ( , check , fallback , revert + , applyToList -- * Property descriptions , describe , (==>) @@ -53,7 +54,8 @@ import System.Posix.Files import qualified Data.Hash.MD5 as MD5 import Data.List import Control.Applicative -import Prelude +import Data.Foldable (Foldable, foldr1) +import Prelude hiding (Foldable) import Propellor.Types import Propellor.Types.Core @@ -341,6 +343,14 @@ unsupportedOS' = go =<< getOS revert :: RevertableProperty setup undo -> RevertableProperty undo setup revert (RevertableProperty p1 p2) = RevertableProperty p2 p1 +-- | Apply a property to each element of a list. +applyToList + :: (Foldable t, Functor t, IsProp p, Combines p p, p ~ CombinedType p p) + => (b -> p) + -> t b + -> p +prop `applyToList` xs = Data.Foldable.foldr1 before $ prop <$> xs + makeChange :: IO () -> Propellor Result makeChange a = liftIO a >> return MadeChange |