Warning fix for unused and redundant imports

32 files changed, 10 insertions, 63 deletions

diff --git a/compiler/codeGen/CgClosure.lhs b/compiler/codeGen/CgClosure.lhs
index 8337f916fe..fd851157d7 100644
--- a/compiler/codeGen/CgClosure.lhs
+++ b/compiler/codeGen/CgClosure.lhs
@@ -36,7 +36,6 @@ import Cmm
 import CmmUtils
 import CLabel
 import StgSyn
-import StaticFlags
 import CostCentre	
 import Id
 import Name
diff --git a/compiler/codeGen/CgInfoTbls.hs b/compiler/codeGen/CgInfoTbls.hs
index 4ba406117b..e2e07f94ca 100644
--- a/compiler/codeGen/CgInfoTbls.hs
+++ b/compiler/codeGen/CgInfoTbls.hs
@@ -43,18 +43,10 @@ import Name
 import DataCon
 import Unique
 import StaticFlags
-import FastString
-import Packages
-import Module
 
 import Maybes
 import Constants
 
-import Outputable 
-
-import Data.Char
-import Data.Word
-
 -------------------------------------------------------------------------
 --
 --	Generating the info table and code for a closure
diff --git a/compiler/coreSyn/MkExternalCore.lhs b/compiler/coreSyn/MkExternalCore.lhs
index de907cf214..9efc76f08e 100644
--- a/compiler/coreSyn/MkExternalCore.lhs
+++ b/compiler/coreSyn/MkExternalCore.lhs
@@ -10,16 +10,14 @@ module MkExternalCore (
 #include "HsVersions.h"
 
 import qualified ExternalCore as C
-import Char
 import Module
 import CoreSyn
 import HscTypes	
 import TyCon
 import TypeRep
 import Type
-import PprExternalCore	-- Instances
+import PprExternalCore () -- Instances
 import DataCon
-import CoreSyn
 import Coercion
 import Var
 import IdInfo
diff --git a/compiler/deSugar/Check.lhs b/compiler/deSugar/Check.lhs
index a81123ec41..b8c61aa9ce 100644
--- a/compiler/deSugar/Check.lhs
+++ b/compiler/deSugar/Check.lhs
@@ -11,7 +11,6 @@ module Check ( check , ExhaustivePat ) where
 
 import HsSyn		
 import TcHsSyn
-import TcType
 import DsUtils
 import MatchLit
 import Id
diff --git a/compiler/deSugar/DsGRHSs.lhs b/compiler/deSugar/DsGRHSs.lhs
index 4f1065e384..4e3dd2d15c 100644
--- a/compiler/deSugar/DsGRHSs.lhs
+++ b/compiler/deSugar/DsGRHSs.lhs
@@ -14,14 +14,12 @@ import {-# SOURCE #-} DsExpr  ( dsLExpr, dsLocalBinds )
 import {-# SOURCE #-} Match   ( matchSinglePat )
 
 import HsSyn
-import HsUtils
 import CoreSyn
 import Var
 import Type
 
 import DsMonad
 import DsUtils
-import Unique
 import PrelInfo
 import TysWiredIn
 import PrelNames
diff --git a/compiler/deSugar/DsListComp.lhs b/compiler/deSugar/DsListComp.lhs
index ccc1a7bb34..a98aef6b3a 100644
--- a/compiler/deSugar/DsListComp.lhs
+++ b/compiler/deSugar/DsListComp.lhs
@@ -21,7 +21,6 @@ import DsMonad		-- the monadery used in the desugarer
 import DsUtils
 
 import DynFlags
-import StaticFlags
 import CoreUtils
 import Var
 import Type
diff --git a/compiler/deSugar/DsMonad.lhs b/compiler/deSugar/DsMonad.lhs
index 577a0d822d..c9fe054d30 100644
--- a/compiler/deSugar/DsMonad.lhs
+++ b/compiler/deSugar/DsMonad.lhs
@@ -55,8 +55,6 @@ import NameEnv
 import OccName
 import DynFlags
 import ErrUtils
-import Bag
-import OccName
 
 import Data.IORef
 
diff --git a/compiler/deSugar/Match.lhs b/compiler/deSugar/Match.lhs
index 9dc5d3af3f..5294320212 100644
--- a/compiler/deSugar/Match.lhs
+++ b/compiler/deSugar/Match.lhs
@@ -26,7 +26,6 @@ import DataCon
 import MatchCon
 import MatchLit
 import PrelInfo
-import TcType
 import Type
 import TysWiredIn
 import BasicTypes
diff --git a/compiler/deSugar/MatchLit.lhs b/compiler/deSugar/MatchLit.lhs
index e0a76011b6..50fec2fd12 100644
--- a/compiler/deSugar/MatchLit.lhs
+++ b/compiler/deSugar/MatchLit.lhs
@@ -27,12 +27,10 @@ import TcType
 import Type
 import PrelNames
 import TysWiredIn
-import PrelNames
 import Unique
 import Literal
 import SrcLoc
 import Ratio
-import SrcLoc
 import Outputable
 import Util
 import FastString
diff --git a/compiler/hsSyn/HsBinds.lhs b/compiler/hsSyn/HsBinds.lhs
index 1d7bc2fa9b..9e08cf592a 100644
--- a/compiler/hsSyn/HsBinds.lhs
+++ b/compiler/hsSyn/HsBinds.lhs
@@ -17,7 +17,7 @@ import {-# SOURCE #-} HsExpr ( HsExpr, pprExpr, LHsExpr,
 import {-# SOURCE #-} HsPat  ( LPat )
 
 import HsTypes
-import PprCore
+import PprCore ()
 import Coercion
 import Type
 import Name
diff --git a/compiler/iface/BuildTyCl.lhs b/compiler/iface/BuildTyCl.lhs
index 8689306e69..707de1cbf7 100644
--- a/compiler/iface/BuildTyCl.lhs
+++ b/compiler/iface/BuildTyCl.lhs
@@ -28,7 +28,6 @@ import Class
 import TyCon
 import Type
 import Coercion
-import Outputable
 
 import Data.List
 \end{code}
diff --git a/compiler/iface/LoadIface.lhs b/compiler/iface/LoadIface.lhs
index 1c8b410123..7fa2f1f7bc 100644
--- a/compiler/iface/LoadIface.lhs
+++ b/compiler/iface/LoadIface.lhs
@@ -38,7 +38,6 @@ import InstEnv
 import FamInstEnv
 import Name
 import NameEnv
-import NameSet
 import MkId
 import Module
 import OccName
@@ -52,7 +51,6 @@ import Outputable
 import BinIface
 import Panic
 
-import Control.Monad (when)
 import Data.List
 import Data.Maybe
 import Data.IORef
diff --git a/compiler/main/DriverPipeline.hs b/compiler/main/DriverPipeline.hs
index 45064beb58..16a1725983 100644
--- a/compiler/main/DriverPipeline.hs
+++ b/compiler/main/DriverPipeline.hs
@@ -30,7 +30,6 @@ import Packages
 import HeaderInfo
 import DriverPhases
 import SysTools
-import qualified SysTools	
 import HscMain
 import Finder
 import HscTypes
@@ -60,7 +59,6 @@ import Control.Monad
 import Data.List	( isSuffixOf )
 import Data.Maybe
 import System.Exit
-import System.Cmd
 import System.Environment
 
 -- ---------------------------------------------------------------------------
diff --git a/compiler/main/ErrUtils.lhs b/compiler/main/ErrUtils.lhs
index 4f8fa14f2e..42cb31474d 100644
--- a/compiler/main/ErrUtils.lhs
+++ b/compiler/main/ErrUtils.lhs
@@ -31,15 +31,13 @@ module ErrUtils (
 
 import Bag		( Bag, bagToList, isEmptyBag, emptyBag )
 import SrcLoc		( SrcSpan )
-import Util		( sortLe, global )
+import Util		( sortLe )
 import Outputable
-import qualified Pretty
 import SrcLoc		( srcSpanStart, noSrcSpan )
 import DynFlags		( DynFlags(..), DynFlag(..), dopt )
 import StaticFlags	( opt_ErrorSpans )
 
 import System.Exit	( ExitCode(..), exitWith )
-import System.IO	( hPutStrLn, stderr )
 import Data.Dynamic
 
 
diff --git a/compiler/main/HeaderInfo.hs b/compiler/main/HeaderInfo.hs
index e124e3755b..233ed1c358 100644
--- a/compiler/main/HeaderInfo.hs
+++ b/compiler/main/HeaderInfo.hs
@@ -23,7 +23,6 @@ import PrelNames        ( gHC_PRIM, mAIN_NAME )
 import StringBuffer	( StringBuffer(..), hGetStringBuffer, hGetStringBufferBlock
                         , appendStringBuffers )
 import SrcLoc
-import FastString	( mkFastString )
 import DynFlags
 import ErrUtils
 import Util
diff --git a/compiler/main/SysTools.lhs b/compiler/main/SysTools.lhs
index c9993a2f5a..17ed501dee 100644
--- a/compiler/main/SysTools.lhs
+++ b/compiler/main/SysTools.lhs
@@ -75,7 +75,6 @@ import GHC.IOBase       ( IOErrorType(..) )
 #else
 import System.Process	( runInteractiveProcess, getProcessExitCode )
 import Control.Concurrent( forkIO, newChan, readChan, writeChan )
-import Data.Char        ( isSpace )
 import FastString       ( mkFastString )
 import SrcLoc           ( SrcLoc, mkSrcLoc, noSrcSpan, mkSrcSpan )
 #endif
diff --git a/compiler/nativeGen/AsmCodeGen.lhs b/compiler/nativeGen/AsmCodeGen.lhs
index 47c875c41d..ff3063c98d 100644
--- a/compiler/nativeGen/AsmCodeGen.lhs
+++ b/compiler/nativeGen/AsmCodeGen.lhs
@@ -26,16 +26,12 @@ import CmmOpt		( cmmMiniInline, cmmMachOpFold )
 import PprCmm		( pprStmt, pprCmms )
 import MachOp
 import CLabel
-#if powerpc_TARGET_ARCH
-import CLabel           ( mkRtsCodeLabel )
-#endif
 
 import UniqFM
 import Unique		( Unique, getUnique )
 import UniqSupply
 import FastTypes
 import List		( groupBy, sortBy )
-import CLabel           ( pprCLabel )
 import ErrUtils		( dumpIfSet_dyn )
 import DynFlags
 import StaticFlags	( opt_Static, opt_PIC )
diff --git a/compiler/ndpFlatten/Flattening.hs b/compiler/ndpFlatten/Flattening.hs
index 18fc319e87..6072ad634f 100644
--- a/compiler/ndpFlatten/Flattening.hs
+++ b/compiler/ndpFlatten/Flattening.hs
@@ -55,12 +55,11 @@ module Flattening (
 #include "HsVersions.h"
 
 -- friends
-import NDPCoreUtils (tupleTyArgs, funTyArgs, parrElemTy, isDefault,
+import NDPCoreUtils (tupleTyArgs, funTyArgs, isDefault,
 		     isLit, mkPArrTy, mkTuple, isSimpleExpr, substIdEnv)
 import FlattenMonad (Flatten, runFlatten, mkBind, extendContext, packContext,
 		     liftVar, liftConst, intersectWithContext, mk'fst,
-		     mk'lengthP, mk'replicateP, mk'mapP, mk'bpermuteDftP,
-		     mk'indexOfP,mk'eq,mk'neq) 
+		     mk'mapP, mk'bpermuteDftP, mk'indexOfP,mk'eq,mk'neq) 
 
 -- GHC
 import TcType	    ( tcIsForAllTy, tcView )
@@ -75,9 +74,9 @@ import Literal      (Literal, literalType)
 import Var	    (Var(..), idType, isTyVar)
 import Id	    (setIdType)
 import DataCon	    (DataCon, dataConTag)
-import HscTypes	    ( ModGuts(..), ModGuts, HscEnv(..), hscEPS )
+import HscTypes	    ( ModGuts(..), HscEnv(..), hscEPS )
 import CoreFVs	    (exprFreeVars)
-import CoreSyn	    (Expr(..), Bind(..), Alt(..), AltCon(..), Note(..),
+import CoreSyn	    (Expr(..), Bind(..), Alt, AltCon(..),
 		     CoreBndr, CoreExpr, CoreBind, mkLams, mkLets,
 		     mkApps, mkIntLitInt)  
 import PprCore      (pprCoreExpr)
diff --git a/compiler/parser/HaddockLex.x b/compiler/parser/HaddockLex.x
index e4c2d2d933..e019e568b4 100644
--- a/compiler/parser/HaddockLex.x
+++ b/compiler/parser/HaddockLex.x
@@ -12,15 +12,12 @@ module HaddockLex (
 	tokenise
  ) where
 
-import HsSyn
 import Lexer hiding (Token)
 import Parser ( parseIdentifier )
 import StringBuffer
-import OccName
 import RdrName
 import SrcLoc
 import DynFlags
-import DynFlags
 
 import Char
 import Numeric
diff --git a/compiler/parser/LexCore.hs b/compiler/parser/LexCore.hs
index 9109c0469a..f16575f827 100644
--- a/compiler/parser/LexCore.hs
+++ b/compiler/parser/LexCore.hs
@@ -1,7 +1,6 @@
 module LexCore where
 
 import ParserCoreUtils
-import Ratio
 import Char
 import Numeric
 
diff --git a/compiler/parser/RdrHsSyn.lhs b/compiler/parser/RdrHsSyn.lhs
index 8eea79705d..96088f400d 100644
--- a/compiler/parser/RdrHsSyn.lhs
+++ b/compiler/parser/RdrHsSyn.lhs
@@ -69,7 +69,6 @@ import OrdList		( OrdList, fromOL )
 import Bag		( Bag, emptyBag, snocBag, consBag, foldrBag )
 import Outputable
 import FastString
-import Panic
 
 import List		( isSuffixOf, nubBy )
 import Monad		( unless )
diff --git a/compiler/profiling/SCCfinal.lhs b/compiler/profiling/SCCfinal.lhs
index 7aaf109697..601aff4cd1 100644
--- a/compiler/profiling/SCCfinal.lhs
+++ b/compiler/profiling/SCCfinal.lhs
@@ -39,7 +39,6 @@ import UniqSupply	( splitUniqSupply, UniqSupply )
 #ifdef PROF_DO_BOXING
 import UniqSupply	( uniqFromSupply )
 #endif
-import Unique           ( Unique )
 import VarSet
 import ListSetOps	( removeDups )
 import Outputable	
diff --git a/compiler/simplCore/LiberateCase.lhs b/compiler/simplCore/LiberateCase.lhs
index 01e410dfb7..02a3fab567 100644
--- a/compiler/simplCore/LiberateCase.lhs
+++ b/compiler/simplCore/LiberateCase.lhs
@@ -23,7 +23,6 @@ import Coercion
 import TyCon
 import VarEnv
 import Name		( localiseName )
-import Outputable
 import Util             ( notNull )
 import Data.IORef	( readIORef )
 \end{code}
diff --git a/compiler/simplStg/SRT.lhs b/compiler/simplStg/SRT.lhs
index eb3229f196..0081c95e0d 100644
--- a/compiler/simplStg/SRT.lhs
+++ b/compiler/simplStg/SRT.lhs
@@ -15,9 +15,7 @@ import StgSyn
 import Id        	( Id )
 import VarSet
 import VarEnv
-import Util		( sortLe )
-import Maybes		( orElse )
-import Maybes		( expectJust )
+import Maybes		( orElse, expectJust )
 import Bitmap		( intsToBitmap )
 
 #ifdef DEBUG
@@ -27,7 +25,6 @@ import Outputable
 import List
 
 import Util
-import Outputable
 \end{code}
 
 \begin{code}
diff --git a/compiler/stgSyn/CoreToStg.lhs b/compiler/stgSyn/CoreToStg.lhs
index 614feba45d..a50a45ee36 100644
--- a/compiler/stgSyn/CoreToStg.lhs
+++ b/compiler/stgSyn/CoreToStg.lhs
@@ -19,7 +19,6 @@ import Type
 import TyCon
 import Id
 import Var		( Var, globalIdDetails, idType )
-import TyCon		( isUnboxedTupleTyCon, isPrimTyCon, isFunTyCon, isHiBootTyCon )
 import IdInfo
 import DataCon
 import CostCentre	( noCCS )
diff --git a/compiler/typecheck/TcEnv.lhs b/compiler/typecheck/TcEnv.lhs
index 8f4fbc9883..6d4cd46629 100644
--- a/compiler/typecheck/TcEnv.lhs
+++ b/compiler/typecheck/TcEnv.lhs
@@ -55,7 +55,6 @@ import TcMType
 import TcType
 import TcGadt
 import qualified Type
-import Id
 import Var
 import VarSet
 import VarEnv
diff --git a/compiler/typecheck/TcForeign.lhs b/compiler/typecheck/TcForeign.lhs
index c78b469d88..1493b3aaf6 100644
--- a/compiler/typecheck/TcForeign.lhs
+++ b/compiler/typecheck/TcForeign.lhs
@@ -34,10 +34,8 @@ import Type
 import SMRep
 import MachOp
 #endif
-import OccName
 import Name
 import TcType
-import ForeignCall
 import DynFlags
 import Outputable
 import SrcLoc
diff --git a/compiler/typecheck/TcGadt.lhs b/compiler/typecheck/TcGadt.lhs
index 4cd7e004b2..cbb4230e74 100644
--- a/compiler/typecheck/TcGadt.lhs
+++ b/compiler/typecheck/TcGadt.lhs
@@ -24,7 +24,6 @@ import Coercion
 import Type
 
 import TypeRep
-import DataCon
 import Var
 import VarEnv
 import VarSet
diff --git a/compiler/typecheck/TcHsSyn.lhs b/compiler/typecheck/TcHsSyn.lhs
index 9411a3a243..56c98dc139 100644
--- a/compiler/typecheck/TcHsSyn.lhs
+++ b/compiler/typecheck/TcHsSyn.lhs
@@ -35,12 +35,10 @@ import Id
 import TcRnMonad
 import Type
 import TcType
-import qualified  Type
 import TcMType
 import TysPrim
 import TysWiredIn
 import TyCon
-import {- Kind parts of -} Type
 import Name
 import Var
 import VarSet
diff --git a/compiler/typecheck/TcRnDriver.lhs b/compiler/typecheck/TcRnDriver.lhs
index 6c55a6232f..ef7e9293dd 100644
--- a/compiler/typecheck/TcRnDriver.lhs
+++ b/compiler/typecheck/TcRnDriver.lhs
@@ -88,6 +88,7 @@ import TysWiredIn
 import IdInfo
 import {- Kind parts of -} Type
 import BasicTypes
+import Foreign.Ptr( Ptr )
 #endif
 
 import FastString
@@ -97,7 +98,6 @@ import Bag
 
 import Control.Monad    ( unless )
 import Data.Maybe	( isJust )
-import Foreign.Ptr      ( Ptr )
 
 \end{code}
 
diff --git a/compiler/utils/BufWrite.hs b/compiler/utils/BufWrite.hs
index 049a698708..18f2864fbe 100644
--- a/compiler/utils/BufWrite.hs
+++ b/compiler/utils/BufWrite.hs
@@ -24,7 +24,6 @@ module BufWrite (
 
 import FastString
 import FastMutInt
-import Panic		( panic )
 
 import Control.Monad	( when )
 import Data.Char	( ord )
@@ -32,7 +31,6 @@ import Foreign
 import System.IO
 
 import GHC.IOBase	( IO(..) )
-import System.IO	( hPutBuf )
 import GHC.Ptr		( Ptr(..) )
 
 import GHC.Exts		( Int(..), Int#, Addr# )
diff --git a/compiler/utils/Panic.lhs b/compiler/utils/Panic.lhs
index 53d75b05a9..300e7fcbcc 100644
--- a/compiler/utils/Panic.lhs
+++ b/compiler/utils/Panic.lhs
@@ -40,7 +40,7 @@ import GHC.ConsoleHandler
 #endif
 
 import Control.Exception
-import Control.Concurrent ( myThreadId, MVar, ThreadId, withMVar, newMVar )
+import Control.Concurrent ( MVar, ThreadId, withMVar, newMVar )
 import Data.Dynamic
 import qualified Control.Exception as Exception
 import Debug.Trace	( trace )