Remove some redundant GHC version checks

Author: sjakobi

src/Nix/Effects.hs

@@ -68,7 +68,7 @@ class Monad m => MonadIntrospect m where
 instance MonadIntrospect IO where
   recursiveSize =
 #ifdef MIN_VERSION_ghc_datasize
-#if MIN_VERSION_ghc_datasize(0,2,0) && __GLASGOW_HASKELL__ >= 804
+#if MIN_VERSION_ghc_datasize(0,2,0)
 recursiveSize
 #else
 \_ -> return 0

src/Nix/Effects/Basic.hs

@@ -47,7 +47,7 @@ import           Nix.Value.Monad
 import           System.FilePath
 
 #ifdef MIN_VERSION_ghc_datasize
-#if MIN_VERSION_ghc_datasize(0,2,0) && __GLASGOW_HASKELL__ >= 804
+#if MIN_VERSION_ghc_datasize(0,2,0)
 import           GHC.DataSize
 #endif
 #endif

src/Nix/Exec.hs

@@ -65,7 +65,7 @@ import qualified Text.Show.Pretty as PS
 #endif
 
 #ifdef MIN_VERSION_ghc_datasize
-#if MIN_VERSION_ghc_datasize(0,2,0) && __GLASGOW_HASKELL__ >= 804
+#if MIN_VERSION_ghc_datasize(0,2,0)
 import           GHC.DataSize
 #endif
 #endif

src/Nix/String/Coerce.hs

@@ -17,7 +17,7 @@ import           Nix.Value
 import           Nix.Value.Monad
 
 #ifdef MIN_VERSION_ghc_datasize
-#if MIN_VERSION_ghc_datasize(0,2,0) && __GLASGOW_HASKELL__ >= 804
+#if MIN_VERSION_ghc_datasize(0,2,0)
 import           GHC.DataSize
 #endif
 #endif