Resolving dependencies...
Configuring base-orphans-0.5.4...
Configuring primitive-0.6.1.0...
Building base-orphans-0.5.4...
Building primitive-0.6.1.0...
Installed base-orphans-0.5.4
Configuring text-1.2.2.1...
Building text-1.2.2.1...
Installed primitive-0.6.1.0
Configuring vector-0.11.0.0...
Building vector-0.11.0.0...
Installed text-1.2.2.1
Configuring hashable-1.2.4.0...
Building hashable-1.2.4.0...
Installed hashable-1.2.4.0
Configuring unordered-containers-0.2.7.1...
Building unordered-containers-0.2.7.1...
Installed vector-0.11.0.0
Installed unordered-containers-0.2.7.1
Configuring witherable-0.1.3.1...
Building witherable-0.1.3.1...
Failed to install witherable-0.1.3.1
Build log ( /home/builder/.cabal/logs/witherable-0.1.3.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-6925/witherable-0.1.3.1'
Configuring witherable-0.1.3.1...
Building witherable-0.1.3.1...
Preprocessing library witherable-0.1.3.1...
[1 of 1] Compiling Data.Witherable  ( src/Data/Witherable.hs, dist/build/Data/Witherable.o )

src/Data/Witherable.hs:196:14: error:
    Variable not in scope:
      build :: ((b -> t0 -> t0) -> t0 -> [a] -> f t0) -> [a] -> f [b]
cabal: Leaving directory '/tmp/cabal-tmp-6925/witherable-0.1.3.1'
cabal: Error: some packages failed to install:
witherable-0.1.3.1 failed during the building phase. The exception was:
ExitFailure 1