add back the "OPTIONS_GHC -Wno-orphans"

src/Nix/Effects.hs

@@ -13,6 +13,9 @@
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE UndecidableInstances #-}
 
+{-# OPTIONS_GHC -Wno-orphans #-}
+
+
 module Nix.Effects where
 
 import           Prelude                 hiding ( putStr

src/Nix/Exec.hs

@@ -15,8 +15,10 @@
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE UndecidableInstances #-}
 
+{-# OPTIONS_GHC -Wno-orphans #-}
 {-# OPTIONS_GHC -fno-warn-name-shadowing #-}
 
+
 module Nix.Exec where
 
 import           Prelude                 hiding ( putStr

src/Nix/Expr/Types.hs

@@ -17,7 +17,7 @@
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE InstanceSigs #-}
 
-
+{-# OPTIONS_GHC -Wno-orphans #-}
 {-# OPTIONS_GHC -Wno-missing-signatures #-}
 
 -- | The Nix expression type and supporting types.

src/Nix/Fresh/Basic.hs

@@ -5,6 +5,7 @@
 {-# LANGUAGE TypeApplications #-}
 {-# LANGUAGE TypeSynonymInstances #-}
 
+{-# OPTIONS_GHC -Wno-orphans #-}
 
 
 module Nix.Fresh.Basic where

src/Nix/Standard.hs

@@ -12,6 +12,7 @@
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE UndecidableInstances #-}
 
+{-# OPTIONS_GHC -Wno-orphans #-}
 
 
 module Nix.Standard where

src/Nix/Var.hs

@@ -3,6 +3,7 @@
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE ScopedTypeVariables #-}
 
+{-# OPTIONS_GHC -Wno-orphans #-}
 
 
 module Nix.Var where