Resolving dependencies...
Configuring call-stack-0.1.0...
Configuring mtl-2.2.1...
Building call-stack-0.1.0...
Building mtl-2.2.1...
Configuring text-1.2.2.1...
Installed call-stack-0.1.0
Building text-1.2.2.1...
Installed mtl-2.2.1
Configuring HUnit-1.5.0.0...
Building HUnit-1.5.0.0...
Installed HUnit-1.5.0.0
Installed text-1.2.2.1
Configuring parsec-3.1.11...
Building parsec-3.1.11...
Installed parsec-3.1.11
Configuring Folly-0.1.4.0...
Building Folly-0.1.4.0...
Failed to install Folly-0.1.4.0
Build log ( /home/builder/.cabal/logs/Folly-0.1.4.0.log ):
cabal: Entering directory '/tmp/cabal-tmp-7022/Folly-0.1.4.0'
Configuring Folly-0.1.4.0...
Building Folly-0.1.4.0...
Preprocessing library Folly-0.1.4.0...
[1 of 4] Compiling Folly.Utils      ( src/Folly/Utils.hs, dist/build/Folly/Utils.o )
[2 of 4] Compiling Folly.Formula    ( src/Folly/Formula.hs, dist/build/Folly/Formula.o )
[3 of 4] Compiling Folly.Unification ( src/Folly/Unification.hs, dist/build/Folly/Unification.o )
[4 of 4] Compiling Folly.Resolution ( src/Folly/Resolution.hs, dist/build/Folly/Resolution.o )

src/Folly/Resolution.hs:9:1: error:
    Failed to load interface for ‘Folly.Theorem’
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-7022/Folly-0.1.4.0'
cabal: Error: some packages failed to install:
Folly-0.1.4.0 failed during the building phase. The exception was:
ExitFailure 1