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templates/GenericTemplate.hs:77:4:
    Illegal bang-pattern (use -XBangPatterns):
    ! i

Building alex-3.1.5...
Preprocessing executable 'alex' for alex-3.1.5...
Setup: The program 'happy' is required but it could not be found

templates/wrappers.hs:7:1: Warning:
    The import of ‘Control.Applicative’ is redundant
      except perhaps to import instances from ‘Control.Applicative’
    To import instances alone, use: import Control.Applicative()

$ alex --version
Alex version 3.1.4, (c) 2003 Chris Dornan and Simon Marlow

naesten@hydrogen:~/hacking/haskell/alex% make -C examples
make: Entering directory `/home/naesten/hacking/haskell/alex/examples'
Makefile:2: ../mk/boilerplate.mk: No such file or directory
Makefile:31: ../mk/target.mk: No such file or directory
make: *** No rule to make target `../mk/target.mk'.  Stop.
make: Leaving directory `/home/naesten/hacking/haskell/alex/examples'

naesten@hydrogen:~/hacking/haskell/alex% make -C templates
make: Entering directory `/home/naesten/hacking/haskell/alex/templates'
Makefile:2: ../mk/boilerplate.mk: No such file or directory
Makefile:67: ../mk/target.mk: No such file or directory
make: *** No rule to make target `../mk/target.mk'.  Stop.
make: Leaving directory `/home/naesten/hacking/haskell/alex/templates'

  AlexLastAcc k input len -> ... AlexToken input len k ...

  AlexLastAcc k input len -> ... AlexToken input len (alex_actions ! k) ...

data AlexInput = AlexInput { alexChar :: {-# UNPACK #-} !Char,
                             alexStr ::  !ByteString.ByteString,
                             alexBytePos :: {-# UNPACK #-} !Int64}

‘Alex’ is an instance of Monad but not Applicative - this will become an
error in GHC 7.10, under the Applicative-Monad Proposal.

$ make -k -C tests clean all
rm -f *.n.hs *.g.hs *.info *.hi *.o *.bin *.exe
../dist/build/alex/alex --template=.. unicode.x -o unicode.n.hs
unicode.x:19:6: lexical error at '\915'
make: *** [unicode.n.hs] Error 1
../dist/build/alex/alex --template=.. -g unicode.x -o unicode.g.hs
unicode.x:19:6: lexical error at '\915'
make: *** [unicode.g.hs] Error 1

   [AΓ]        { character }

{
module AlexBug where
}
%wrapper "basic"

@opstr = [^:]+
$preop = \,

tokens :-
  $preop^ @opstr / \: { TokenOperation }

{
data Token = TokenOperation String
  deriving (Read, Show, Eq, Ord)
}

$ cabal-dev install
Resolving dependencies...
Configuring alexbug-0.1.0.0...
Building alexbug-0.1.0.0...
Preprocessing executable 'alexbug' for alexbug-0.1.0.0...
[1 of 2] Compiling AlexBug          ( dist/build/alexbug/alexbug-tmp/AlexBug.hs, dist/build/alexbug/alexbug-tmp/AlexBug.o )

templates/wrappers.hs:428:119:
    Couldn't match expected type `AlexInput'
                with actual type `(t0, t1)'
    Expected type: t2 -> AlexInput -> Int -> AlexInput -> Bool
      Actual type: t2 -> (t0, t1) -> t3 -> t4 -> t5
    In the return type of a call of `alexPrevCharMatches'
    In the first argument of `alexAndPred', namely
      `alexPrevCharMatches (\ c -> c >= ',' && c <= ',' || False)'
Failed to install alexbug-0.1.0.0
cabal: Error: some packages failed to install:
alexbug-0.1.0.0 failed during the building phase. The exception was:
ExitFailure 1

{
{-# OPTIONS -w  #-}
module Main where
}

%wrapper "basic"

tokens :-
  $white+                               ;
  λ                                     { const TokenLambda  }

{
-- The token type:
data Token = TokenLambda
  deriving Show

main :: IO ()
main = do
  i <- readFile "input"
  print (alexScanTokens i)

}

$ cat input
λ

[dagit@mango:~/Documents/Repos/testing/alex-unicode]
$ alex Main.x
[dagit@mango:~/Documents/Repos/testing/alex-unicode]
$ ghc --make Main.hs
[1 of 1] Compiling Main             ( Main.hs, Main.o )
Linking Main.exe ...
[dagit@mango:~/Documents/Repos/testing/alex-unicode]
$ ./Main.exe
Main.exe: lexical error

Setup: The program happy is required but it could not be found

compiler/parser/Lexer.x:2658:21: error:
    • Couldn't match type ‘Word64’ with ‘()’
      Expected type: ()
        Actual type: ExtsBitmap
    • In the first argument of ‘alexScanUser’, namely ‘exts’
      In the expression: alexScanUser exts inp sc
      In a stmt of a 'do' block:
        case alexScanUser exts inp sc of {
          AlexEOF
            -> do { let ...;
                    setLastToken span 0;
                    .... }
          AlexError (AI loc2 buf)
            -> reportLexError loc1 loc2 buf "lexical error"
          AlexSkip inp2 _
            -> do { setInput inp2;
                    lexToken }
          AlexToken inp2@(AI end buf2) _ t
            -> do { setInput inp2;
                    let ...;
                    .... } }

compiler/stage1/build/Lexer.hs:116:15: error:
    • Couldn't match type ‘Word64’ with ‘()’
      Expected type: Array Int (AlexAcc ())
        Actual type: Array Int (AlexAcc ExtsBitmap)
    • In the expression:
        listArray
          (0 :: Int, 207)
          [AlexAccNone, AlexAcc 167, AlexAcc 166, AlexAcc 165, ....]
      In an equation for ‘alex_accept’:
          alex_accept
            = listArray
                (0 :: Int, 207) [AlexAccNone, AlexAcc 167, AlexAcc 166, ....]

program:2:9

../dist/build/alex/alex --template=.. -g tokens_bytestring_unicode.x -o tokens_bytestring_unicode.g.hs
ghc -Wall -fno-warn-missing-signatures -fno-warn-name-shadowing -fno-warn-unused-imports -fno-warn-tabs -Werror -package array -package bytestring  tokens_bytestring_unicode.g.hs -o tokens_bytestring_unicode.g.bin
[1 of 1] Compiling Main             ( tokens_bytestring_unicode.g.hs, tokens_bytestring_unicode.g.o )
Linking tokens_bytestring_unicode.g.bin ...
./tokens_bytestring_unicode.g.bin
make: *** No rule to make target 'basic_typeclass.n.run', needed by 'all'.
make: *** No rule to make target 'basic_typeclass.g.run', needed by 'all'.
make: *** No rule to make target 'basic_typeclass_bytestring.n.run', needed by 'all'.
make: *** No rule to make target 'basic_typeclass_bytestring.g.run', needed by 'all'.
make: *** No rule to make target 'strict_typeclass.n.run', needed by 'all'.
make: *** No rule to make target 'strict_typeclass.g.run', needed by 'all'.
make: *** No rule to make target 'posn_typeclass.n.run', needed by 'all'.
make: *** No rule to make target 'posn_typeclass.g.run', needed by 'all'.
make: *** No rule to make target 'posn_typeclass_bytestring.n.run', needed by 'all'.
make: *** No rule to make target 'posn_typeclass_bytestring.g.run', needed by 'all'.
make: *** No rule to make target 'gscan_typeclass.n.run', needed by 'all'.
make: *** No rule to make target 'gscan_typeclass.g.run', needed by 'all'.
make: *** No rule to make target 'monad_typeclass.n.run', needed by 'all'.
make: *** No rule to make target 'monad_typeclass.g.run', needed by 'all'.
make: *** No rule to make target 'monad_typeclass_bytestring.n.run', needed by 'all'.
make: *** No rule to make target 'monad_typeclass_bytestring.g.run', needed by 'all'.
make: *** No rule to make target 'monadUserState_typeclass.n.run', needed by 'all'.
make: *** No rule to make target 'monadUserState_typeclass.g.run', needed by 'all'.
make: *** No rule to make target 'monadUserState_typeclass_bytestring.n.run', needed by 'all'.
make: *** No rule to make target 'monadUserState_typeclass_bytestring.g.run', needed by 'all'.
make: *** No rule to make target 'default_typeclass.n.run', needed by 'all'.
make: *** No rule to make target 'default_typeclass.g.run', needed by 'all'.
make: Target 'all' not remade because of errors.
make: Leaving directory '/tmp/stackage-build8/alex-3.2.0/tests'

dist/build/stgma/stgma-tmp/Scan.hs:315:17:
    Warning: Pattern bindings containing unlifted types should use an outermost bang pattern:
               ((I# (ord_c))) = fromIntegral c
    In the expression:
      let
        (base) = alexIndexInt32OffAddr alex_base s
        ((I# (ord_c))) = fromIntegral c
        (offset) = (base +# ord_c)
        ....
      in
        case new_s of {
          -1# -> (new_acc, input)
          _ -> alex_scan_tkn
                 user
                 orig_input
                 (if c < 128 || c >= 192 then (len +# 1#) else len)
                 new_input
                 new_s
                 new_acc }
    In a case alternative:
        Just (c, new_input)
          -> let
               (base) = alexIndexInt32OffAddr alex_base s
               ((I# (ord_c))) = fromIntegral c
               ....
             in
               case new_s of {
                 -1# -> (new_acc, input)
                 _ -> alex_scan_tkn
                        user
                        orig_input
                        (if c < 128 || c >= 192 then (len +# 1#) else len)
                        new_input
                        new_s
                        new_acc }
    In the second argument of `seq', namely
      `case alexGetByte input of {
         Nothing -> (new_acc, input)
         Just (c, new_input)
           -> let
                (base) = ...
                ....
              in
                case new_s of {
                  -1# -> ...
                  _ -> alex_scan_tkn
                         user
                         orig_input
                         (if c < 128 || c >= 192 then (len +# 1#) else len)
                         new_input
                         new_s
                         new_acc } }'

main :-
<0> {
. { c () }
}

main :-
<0> {
}

#!/bin/sh
alex "$2" -o="$3"

templates/wrappers.hs:347:9:
    Couldn't match type ‘Int’ with ‘Int64’
    Expected type: AlexInput → Int64 → Alex Token
      Actual type: (AlexPosn, Char, ByteString.ByteString, [Char])
                   → Int → Alex Token
    In a stmt of a 'do' block: action (ignorePendingBytes inp) len
    In the expression:
      do { alexSetInput inp';
           action (ignorePendingBytes inp) len }
    In a case alternative:
        AlexToken inp'@(_, _, _, n') _ action
          -> do { alexSetInput inp';
                  action (ignorePendingBytes inp) len }
          where
              len = n' - n

data AlexReturn a
  = AlexEOF
  | AlexError  !AlexInput
  | AlexSkip   !AlexInput !Int
  | AlexToken  !AlexInput !Int a

alexMonadScan = do
  inp@(_,_,str,n) <- alexGetInput
  sc <- alexGetStartCode
  case alexScan inp sc of
    AlexEOF -> alexEOF
    AlexError ((AlexPn _ line column),_,_,_) -> alexError $ "lexical error at line " ++ (show line) ++ ", column " ++ (show column)
    AlexSkip  inp' len -> do
        alexSetInput inp'
        alexMonadScan
    AlexToken inp'@(_,_,_,n') _ action -> do
        alexSetInput inp'
        action (ignorePendingBytes inp) len
      where
        len = n'-n

{
{-# LANGUAGE OverloadedStrings #-}
module Main where
import qualified Data.ByteString.Lazy.Char8 as B
}

%wrapper "basic-bytestring"

tokens :-
  a^b    {const True}
  a      {const True}
  ∃^∀    {const True}
  ∃      {const True}
  .      {const False}

{
main::IO ()
main = do
  print . and . alexScanTokens $ "ab"
  print . and . alexScanTokens $ "∃∀"
}

{-# LINE 1 "/var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc64947_0/ghc_2.h" #-}

[20 of 22] Compiling Scan             ( dist/build/alex/alex-tmp/Scan.hs, dist/build/alex/alex-tmp/Scan.o )

dist/build/alex/alex-tmp/Scan.hs:349:29:
    Couldn't match expected type ‛Bool’ with actual type ‛Int#’
    In the first argument of ‛(&&)’, namely ‛(offset >=# 0#)’
    In the expression: (offset >=# 0#) && (check ==# ord_c)
    In the expression:
      if (offset >=# 0#) && (check ==# ord_c) then
          alexIndexInt16OffAddr alex_table offset
      else
          alexIndexInt16OffAddr alex_deflt s

dist/build/alex/alex-tmp/Scan.hs:349:48:
    Couldn't match expected type ‛Bool’ with actual type ‛Int#’
    In the second argument of ‛(&&)’, namely ‛(check ==# ord_c)’
    In the expression: (offset >=# 0#) && (check ==# ord_c)
    In the expression:
      if (offset >=# 0#) && (check ==# ord_c) then
          alexIndexInt16OffAddr alex_table offset
      else
          alexIndexInt16OffAddr alex_deflt s

src/Scan.x:152:2:
    No instance for (Num a0) arising from a use of ‛go’
    The type variable ‛a0’ is ambiguous
    Note: there are several potential instances:
      instance Num Double -- Defined in ‛GHC.Float’
      instance Num Float -- Defined in ‛GHC.Float’
      instance Integral a => Num (GHC.Real.Ratio a)
        -- Defined in ‛GHC.Real’
      ...plus 37 others
    In a stmt of a 'do' block: go inp 1 ""
    In the expression:
      do { inp <- getInput;
           go inp 1 "" }
    In an equation for ‛code’:
        code (p, _, inp) len
          = do { inp <- getInput;
                 go inp 1 "" }
          where
              go inp 0 cs
                = do { setInput inp;
                       .... }
              go inp n cs = do { ... }
              go_char inp n (c1 : c2 : cs)
                | isAlphaNum c2 = go inp n (c1 : c2 : cs)
              go_char inp n cs = go_str inp n cs '\''
              go_str inp n cs end = do { ... }
              err inp
                = do { setInput inp;
                       .... }

ζ: cabal install    
Resolving dependencies...
[1 of 1] Compiling Main             ( dist/setup/setup.hs, dist/setup/Main.o )

dist/setup/setup.hs:3:2: Parse error in pattern: begin {code}
Failed to install alex-3.1.0
cabal: Error: some packages failed to install:
alex-3.1.0 failed during the configure step. The exception was:
ExitFailure 1

#!/usr/bin/runhaskell

\begin{code}
module Main where

import Distribution.Verbosity
{- snip -}
     ]

\end{code}

alex_base
alex_table
alex_check
alex_dflt
alex_accept

Configuring alex-3.1.4...
Building alex-3.1.4...
Preprocessing executable 'alex' for alex-3.1.4...
setup: The program 'happy' is required but it could not be found
Failed to install alex-3.1.4

$ cabal sandbox init
Writing a default package environment file to
Users/user/Projects/alex/cabal.sandbox.config
Creating a new sandbox at Users/user/Projects/alex/.cabal-sandbox
$ cabal install
Warning: The package list for 'hackage.haskell.org' is 17 days old.
Run 'cabal update' to get the latest list of available packages.
Resolving dependencies...
Configuring primitive-0.5.4.0...
Building primitive-0.5.4.0...
Preprocessing library primitive-0.5.4.0...
[ 1 of 10] Compiling Data.Primitive.Internal.Compat ( Data/Primitive/Internal/Compat.hs, dist/dist-sandbox-ff7bbd35/build/Data/Primitive/Internal/Compat.o )
[ 2 of 10] Compiling Data.Primitive.MachDeps ( Data/Primitive/MachDeps.hs, dist/dist-sandbox-ff7bbd35/build/Data/Primitive/MachDeps.o )
[ 3 of 10] Compiling Data.Primitive.Internal.Operations ( Data/Primitive/Internal/Operations.hs, dist/dist-sandbox-ff7bbd35/build/Data/Primitive/Internal/Operations.o )
[ 4 of 10] Compiling Control.Monad.Primitive ( Control/Monad/Primitive.hs, dist/dist-sandbox-ff7bbd35/build/Control/Monad/Primitive.o )
[ 5 of 10] Compiling Data.Primitive.Types ( Data/Primitive/Types.hs, dist/dist-sandbox-ff7bbd35/build/Data/Primitive/Types.o )
[ 6 of 10] Compiling Data.Primitive.Array ( Data/Primitive/Array.hs, dist/dist-sandbox-ff7bbd35/build/Data/Primitive/Array.o )

Data/Primitive/Array.hs:32:1: Warning:
The import of ‘Control.Monad.ST’ is redundant
  except perhaps to import instances from ‘Control.Monad.ST’
To import instances alone, use: import Control.Monad.ST()
[ 7 of 10] Compiling Data.Primitive.ByteArray ( Data/Primitive/ByteArray.hs, dist/dist-sandbox-ff7bbd35/build/Data/Primitive/ByteArray.o )
[ 8 of 10] Compiling Data.Primitive.Addr ( Data/Primitive/Addr.hs, dist/dist-sandbox-ff7bbd35/build/Data/Primitive/Addr.o )
[ 9 of 10] Compiling Data.Primitive   ( Data/Primitive.hs, dist/dist-sandbox-ff7bbd35/build/Data/Primitive.o )
[10 of 10] Compiling Data.Primitive.MutVar ( Data/Primitive/MutVar.hs, dist/dist-sandbox-ff7bbd35/build/Data/Primitive/MutVar.o )
In-place registering primitive-0.5.4.0...
Creating package registration file:
/var/folders/yn/lxnhmck55w70_1cwlp4tq6h00000gn/T/pkgConf-primitive-0.5.421332.0
Installing library in
Users/user/Projects/alex/.cabal-sandbox/lib/x86_64-osx-ghc-7.8.3/primitive-0.5.4.0
Registering primitive-0.5.4.0...
Installed primitive-0.5.4.0
Configuring random-1.1...
Building random-1.1...
Preprocessing library random-1.1...
[1 of 1] Compiling System.Random    ( System/Random.hs, dist/dist-sandbox-ff7bbd35/build/System/Random.o )
In-place registering random-1.1...
Creating package registration file:
/var/folders/yn/lxnhmck55w70_1cwlp4tq6h00000gn/T/pkgConf-random-121332.1
Installing library in
Users/user/Projects/alex/.cabal-sandbox/lib/x86_64-osx-ghc-7.8.3/random-1.1
Registering random-1.1...
Installed random-1.1
Configuring tf-random-0.5...
Building tf-random-0.5...
Preprocessing library tf-random-0.5...
[1 of 4] Compiling System.Random.TF.Gen ( src/System/Random/TF/Gen.hs, dist/dist-sandbox-ff7bbd35/build/System/Random/TF/Gen.o )
[2 of 4] Compiling System.Random.TF.Init ( src/System/Random/TF/Init.hs, dist/dist-sandbox-ff7bbd35/build/System/Random/TF/Init.o )

src/System/Random/TF/Init.hs:94:5: Warning:
In the use of ‘bitSize’ (imported from Data.Bits):
Deprecated: "Use 'bitSizeMaybe' or 'finiteBitSize' instead"
[3 of 4] Compiling System.Random.TF.Instances ( src/System/Random/TF/Instances.hs, dist/dist-sandbox-ff7bbd35/build/System/Random/TF/Instances.o )
[4 of 4] Compiling System.Random.TF ( src/System/Random/TF.hs, dist/dist-sandbox-ff7bbd35/build/System/Random/TF.o )
In-place registering tf-random-0.5...
Creating package registration file:
/var/folders/yn/lxnhmck55w70_1cwlp4tq6h00000gn/T/pkgConf-tf-random-021332.5
Installing library in
Users/user/Projects/alex/.cabal-sandbox/lib/x86_64-osx-ghc-7.8.3/tf-random-0.5
Registering tf-random-0.5...
Installed tf-random-0.5
Configuring QuickCheck-2.7.6...
Building QuickCheck-2.7.6...
Preprocessing library QuickCheck-2.7.6...
[ 1 of 15] Compiling Test.QuickCheck.Random ( Test/QuickCheck/Random.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Random.o )
[ 2 of 15] Compiling Test.QuickCheck.Exception ( Test/QuickCheck/Exception.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Exception.o )
[ 3 of 15] Compiling Test.QuickCheck.Text ( Test/QuickCheck/Text.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Text.o )
[ 4 of 15] Compiling Test.QuickCheck.State ( Test/QuickCheck/State.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/State.o )
[ 5 of 15] Compiling Test.QuickCheck.Gen ( Test/QuickCheck/Gen.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Gen.o )
[ 6 of 15] Compiling Test.QuickCheck.Gen.Unsafe ( Test/QuickCheck/Gen/Unsafe.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Gen/Unsafe.o )
[ 7 of 15] Compiling Test.QuickCheck.Arbitrary ( Test/QuickCheck/Arbitrary.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Arbitrary.o )
[ 8 of 15] Compiling Test.QuickCheck.Modifiers ( Test/QuickCheck/Modifiers.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Modifiers.o )
[ 9 of 15] Compiling Test.QuickCheck.Poly ( Test/QuickCheck/Poly.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Poly.o )
[10 of 15] Compiling Test.QuickCheck.Function ( Test/QuickCheck/Function.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Function.o )
[11 of 15] Compiling Test.QuickCheck.Property ( Test/QuickCheck/Property.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Property.o )
[12 of 15] Compiling Test.QuickCheck.Test ( Test/QuickCheck/Test.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Test.o )
[13 of 15] Compiling Test.QuickCheck.All ( Test/QuickCheck/All.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/All.o )
[14 of 15] Compiling Test.QuickCheck.Monadic ( Test/QuickCheck/Monadic.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck/Monadic.o )
[15 of 15] Compiling Test.QuickCheck  ( Test/QuickCheck.hs, dist/dist-sandbox-ff7bbd35/build/Test/QuickCheck.o )
In-place registering QuickCheck-2.7.6...
Creating package registration file:
/var/folders/yn/lxnhmck55w70_1cwlp4tq6h00000gn/T/pkgConf-QuickCheck-2.721332.6
Installing library in
Users/user/Projects/alex/.cabal-sandbox/lib/x86_64-osx-ghc-7.8.3/QuickCheck-2.7.6
Registering QuickCheck-2.7.6...
Installed QuickCheck-2.7.6
[1 of 1] Compiling Main             ( dist/dist-sandbox-ff7bbd35/setup/setup.hs, dist/dist-sandbox-ff7bbd35/setup/Main.o )
Linking ./dist/dist-sandbox-ff7bbd35/setup/setup ...
Configuring alex-3.1.4...
Building alex-3.1.4...
Preprocessing executable 'alex' for alex-3.1.4...
setup: The program 'happy' is required but it could not be found
Failed to install alex-3.1.4
cabal: Error: some packages failed to install:
alex-3.1.4 failed during the building phase. The exception was:
ExitFailure 1

where len = ByteString.length str - ByteString.length str'

Failed to install gtk2hs-buildtools-0.13.0.4
Last 10 lines of the build log (
/home/travis/.cabal/logs/gtk2hs-buildtools-0.13.0.4.log ):
[23 of 41] Compiling CAttrs           ( c2hs/c/CAttrs.hs,
dist/build/gtk2hsC2hs/gtk2hsC2hs-tmp/CAttrs.o )
[24 of 41] Compiling CBuiltin         ( c2hs/c/CBuiltin.hs,
dist/build/gtk2hsC2hs/gtk2hsC2hs-tmp/CBuiltin.o )
[25 of 41] Compiling CParserMonad     ( c2hs/c/CParserMonad.hs,
dist/build/gtk2hsC2hs/gtk2hsC2hs-tmp/CParserMonad.o )
[26 of 41] Compiling CLexer           (
dist/build/gtk2hsC2hs/gtk2hsC2hs-tmp/CLexer.hs,
dist/build/gtk2hsC2hs/gtk2hsC2hs-tmp/CLexer.o )
c2hs/c/CLexer.x:400:49:
    Not in scope: ‘ord’
    Perhaps you meant one of these:
      ‘odd’ (imported from Prelude), ‘or’ (imported from Prelude),
      ‘ord#’ (imported from GHC.Exts)
cabal: Error: some packages failed to install:
gtk2hs-buildtools-0.13.0.4 failed during the building phase. The exception
was:
ExitFailure 1