Resolving dependencies...
Configuring call-stack-0.1.0...
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Building call-stack-0.1.0...
Configuring utf8-string-1.0.1.1...
Installed call-stack-0.1.0
Building utf8-string-1.0.1.1...
Configuring yjtools-0.9.18...
Installed mtl-2.2.1
Building yjtools-0.9.18...
Installed utf8-string-1.0.1.1
Configuring HUnit-1.5.0.0...
Configuring mtlparse-0.1.4.0...
Installed yjtools-0.9.18
Building HUnit-1.5.0.0...
Building mtlparse-0.1.4.0...
Installed mtlparse-0.1.4.0
Installed HUnit-1.5.0.0
Configuring regexpr-0.5.4...
Building regexpr-0.5.4...
Installed regexpr-0.5.4
Downloading ehaskell-0.7...
Configuring ehaskell-0.7...
Building ehaskell-0.7...
Failed to install ehaskell-0.7
Build log ( /home/builder/.cabal/logs/ehaskell-0.7.log ):
cabal: Entering directory '/tmp/cabal-tmp-31006/ehaskell-0.7'
Configuring ehaskell-0.7...
Building ehaskell-0.7...
Preprocessing executable 'ehs' for ehaskell-0.7...
[1 of 6] Compiling Types            ( Types.hs, dist/build/ehs/ehs-tmp/Types.o )
[2 of 6] Compiling MkCode           ( MkCode.hs, dist/build/ehs/ehs-tmp/MkCode.o )

MkCode.hs:51:1: warning: [-Wtabs]
    Tab character found here, and in one further location.
    Please use spaces instead.
[3 of 6] Compiling GetCodeText      ( GetCodeText.hs, dist/build/ehs/ehs-tmp/GetCodeText.o )

GetCodeText.hs:45:19: error:
    • Variable not in scope:
        msum
          :: [Parse Char (CodeText, String)] -> Parse Char (CodeText, [Char])
    • Perhaps you meant ‘sum’ (imported from Prelude)
cabal: Leaving directory '/tmp/cabal-tmp-31006/ehaskell-0.7'
cabal: Error: some packages failed to install:
ehaskell-0.7 failed during the building phase. The exception was:
ExitFailure 1