Mark Conduit modules as Safe/Trustworthy

Unfortunately RULES pragmas can't be defined (more accurately, won't fire
if defined) in Safe modules, so Trustworthy is the only option in many
cases.

conduit/Data/Conduit.hs

@@ -1,5 +1,6 @@
 {-# LANGUAGE RankNTypes #-}
 {-# LANGUAGE DeriveFunctor #-}
+{-# LANGUAGE Safe #-}
 -- | If this is your first time with conduit, you should probably start with
 -- the tutorial:
 -- <https://haskell.fpcomplete.com/user/snoyberg/library-documentation/conduit-overview>.

conduit/Data/Conduit/Internal.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE Safe #-}
 {-# OPTIONS_HADDOCK not-home #-}
 module Data.Conduit.Internal
     ( -- * Pipe

conduit/Data/Conduit/Internal/Conduit.hs

@@ -1,13 +1,13 @@
 {-# OPTIONS_HADDOCK not-home #-}
+{-# LANGUAGE DeriveFunctor #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE CPP #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE UndecidableInstances #-}
 {-# LANGUAGE RankNTypes #-}
 {-# LANGUAGE TupleSections #-}
-{-# LANGUAGE GeneralizedNewtypeDeriving #-}
-{-# LANGUAGE ImpredicativeTypes #-}
+{-# LANGUAGE Trustworthy #-}
 module Data.Conduit.Internal.Conduit
     ( -- ** Types
       ConduitM (..)

conduit/Data/Conduit/Internal/Fusion.hs

@@ -2,6 +2,7 @@
 {-# LANGUAGE RankNTypes #-}
 {-# LANGUAGE BangPatterns #-}
 {-# LANGUAGE DeriveFunctor #-}
+{-# LANGUAGE Trustworthy #-}
 module Data.Conduit.Internal.Fusion
     ( -- ** Types
       Step (..)

conduit/Data/Conduit/Internal/List/Stream.hs

@@ -1,6 +1,7 @@
 {-# LANGUAGE BangPatterns #-}
 {-# LANGUAGE TupleSections #-}
 {-# LANGUAGE RankNTypes #-}
+{-# LANGUAGE Trustworthy #-}
 module Data.Conduit.Internal.List.Stream where
 
 import           Control.Monad (liftM)

conduit/Data/Conduit/Internal/Pipe.hs

@@ -6,8 +6,8 @@
 {-# LANGUAGE UndecidableInstances #-}
 {-# LANGUAGE RankNTypes #-}
 {-# LANGUAGE TupleSections #-}
-{-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE ImpredicativeTypes #-}
+{-# LANGUAGE Trustworthy #-}
 module Data.Conduit.Internal.Pipe
     ( -- ** Types
       Pipe (..)

conduit/Data/Conduit/Lift.hs

@@ -1,4 +1,5 @@
 {-# LANGUAGE RankNTypes #-}
+{-# LANGUAGE Safe #-}
 -- | Allow monad transformers to be run\/eval\/exec in a section of conduit
 -- rather then needing to run across the whole conduit.  The circumvents many
 -- of the problems with breaking the monad transformer laws.  For more

conduit/Data/Conduit/List.hs

@@ -1,6 +1,7 @@
 {-# LANGUAGE RankNTypes #-}
 {-# LANGUAGE BangPatterns #-}
 {-# LANGUAGE CPP #-}
+{-# LANGUAGE Trustworthy #-}
 -- | Higher-level functions to interact with the elements of a stream. Most of
 -- these are based on list functions.
 --