Resolving dependencies...
Configuring network-2.6.3.1...
Configuring parallel-3.2.1.0...
Building parallel-3.2.1.0...
Building network-2.6.3.1...
Installed parallel-3.2.1.0
Installed network-2.6.3.1
Configuring ConcurrentUtils-0.4.0.0...
Building ConcurrentUtils-0.4.0.0...
Failed to install ConcurrentUtils-0.4.0.0
Build log ( /home/builder/.cabal/logs/ConcurrentUtils-0.4.0.0.log ):
cabal: Entering directory '/tmp/cabal-tmp-32025/ConcurrentUtils-0.4.0.0'
Configuring ConcurrentUtils-0.4.0.0...
Building ConcurrentUtils-0.4.0.0...
Preprocessing library ConcurrentUtils-0.4.0.0...
[1 of 9] Compiling Control.CUtils.Split ( Control/CUtils/Split.hs, dist/build/Control/CUtils/Split.o )

Control/CUtils/Split.hs:4:1: warning: [-Wtabs]
    Tab character found here, and in 8 further locations.
    Please use spaces instead.
[2 of 9] Compiling Control.CUtils.NetChan ( Control/CUtils/NetChan.hs, dist/build/Control/CUtils/NetChan.o )

Control/CUtils/NetChan.hs:46:1: warning: [-Wtabs]
    Tab character found here, and in 194 further locations.
    Please use spaces instead.
[3 of 9] Compiling Control.CUtils.FChan ( Control/CUtils/FChan.hs, dist/build/Control/CUtils/FChan.o )

Control/CUtils/FChan.hs:20:1: warning: [-Wtabs]
    Tab character found here, and in 26 further locations.
    Please use spaces instead.
[4 of 9] Compiling Control.CUtils.Processes ( Control/CUtils/Processes.hs, dist/build/Control/CUtils/Processes.o )

Control/CUtils/Processes.hs:29:1: warning: [-Wtabs]
    Tab character found here, and in 71 further locations.
    Please use spaces instead.
[5 of 9] Compiling Control.CUtils.Deadlock ( Control/CUtils/Deadlock.hs, dist/build/Control/CUtils/Deadlock.o )

Control/CUtils/Deadlock.hs:54:1: warning: [-Wtabs]
    Tab character found here, and in 72 further locations.
    Please use spaces instead.
[6 of 9] Compiling Control.CUtils.Conc ( Control/CUtils/Conc.hs, dist/build/Control/CUtils/Conc.o )

Control/CUtils/Conc.hs:90:1: error:
    • Non type-variable argument in the constraint: MArray IOArray e m
      (Use FlexibleContexts to permit this)
    • When checking the inferred type
        partConcF :: forall e a (m :: * -> *).
                     MArray IOArray e m =>
                     (Int, Int)
                     -> ((Int -> m ()) -> IO a) -> (Int -> m e) -> IO (Array Int e)
cabal: Leaving directory '/tmp/cabal-tmp-32025/ConcurrentUtils-0.4.0.0'
cabal: Error: some packages failed to install:
ConcurrentUtils-0.4.0.0 failed during the building phase. The exception was:
ExitFailure 1