Silence compiler warnings

lib/GHCup/Utils/File.hs

@@ -232,7 +232,7 @@ execLogged exe spath args lfile chdir env = do
 
     readTilEOF action' fd' = do
       bs <- readLine fd'
-      action' bs
+      void $ action' bs
       readTilEOF action' fd'
 
 
@@ -309,7 +309,7 @@ captureOutStreams action = do
 
   readTilEOF ~action' fd' = do
     bs <- SPIB.fdRead fd' 512
-    action' bs
+    void $ action' bs
     readTilEOF action' fd'
 
 

lib/GHCup/Utils/Version/QQ.hs

@@ -1,4 +1,5 @@
 {-# OPTIONS_GHC -Wno-orphans    #-}
+{-# LANGUAGE CPP                #-}
 {-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE DeriveLift         #-}
 {-# LANGUAGE FlexibleInstances  #-}
@@ -11,6 +12,9 @@ module GHCup.Utils.Version.QQ where
 import           Data.Data
 import           Data.Text                      ( Text )
 import           Data.Versions
+#if !MIN_VERSION_base(4,13,0)
+import           GHC.Base
+#endif
 import           Language.Haskell.TH
 import           Language.Haskell.TH.Quote      ( QuasiQuoter(..) )
 import           Language.Haskell.TH.Syntax     ( Lift
@@ -36,6 +40,11 @@ deriving instance Data VSep
 deriving instance Lift VUnit
 deriving instance Data VUnit
 
+#if !MIN_VERSION_base(4,13,0)
+deriving instance Lift (NonEmpty Word)
+instance Lift Text
+#endif
+
 qq :: (Text -> Q Exp) -> QuasiQuoter
 qq quoteExp' = QuasiQuoter
   { quoteExp  = (\s -> quoteExp' . T.pack $ s)