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-rw-r--r--Distribution/Helper.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/Distribution/Helper.hs b/Distribution/Helper.hs
index 323de0e..0ba62cf 100644
--- a/Distribution/Helper.hs
+++ b/Distribution/Helper.hs
@@ -98,7 +98,7 @@ data SomeLocalBuildInfo = SomeLocalBuildInfo {
-- running all possible queries against it at once is cheap.
newtype Query m a = Query { unQuery :: StateT (Maybe SomeLocalBuildInfo)
(ReaderT (Programs, FilePath) m) a }
- deriving (Functor, Applicative, Monad)
+ deriving (Functor, Applicative, Monad, MonadIO)
type MonadQuery m = ( MonadIO m
, MonadState (Maybe SomeLocalBuildInfo) m