Resolving dependencies...
Configuring libffi-0.1...
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Building libffi-0.1...
Installed libffi-0.1
Configuring text-1.2.2.1...
Building text-1.2.2.1...
Installed mtl-2.2.1
Installed text-1.2.2.1
Configuring air-2015.5.4...
Building air-2015.5.4...
Installed air-2015.5.4
Configuring luka-2012.8.29...
Building luka-2012.8.29...
Failed to install luka-2012.8.29
Build log ( /home/builder/.cabal/logs/luka-2012.8.29.log ):
cabal: Entering directory '/tmp/cabal-tmp-28335/luka-2012.8.29'
Warning: luka.cabal: Unknown fields: build-depends (line 10)
Fields allowed in this section:
name, version, cabal-version, build-type, license, license-file,
license-files, copyright, maintainer, stability, homepage,
package-url, bug-reports, synopsis, description, category, author,
tested-with, data-files, data-dir, extra-source-files,
extra-tmp-files, extra-doc-files
Configuring luka-2012.8.29...
Building luka-2012.8.29...
Preprocessing library luka-2012.8.29...
[1 of 3] Compiling Language.ObjectiveC.Luka.RunTime ( src/Language/ObjectiveC/Luka/RunTime.hs, dist/build/Language/ObjectiveC/Luka/RunTime.o )
[2 of 3] Compiling Language.ObjectiveC.Luka.API ( src/Language/ObjectiveC/Luka/API.hs, dist/build/Language/ObjectiveC/Luka/API.o )
[3 of 3] Compiling Language.ObjectiveC.Luka ( src/Language/ObjectiveC/Luka.hs, dist/build/Language/ObjectiveC/Luka.o )

src/Language/ObjectiveC/Luka.hs:12:1: error:
    Failed to load interface for ‘Language.ObjectiveC.Luka.Prelude’
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-28335/luka-2012.8.29'
cabal: Error: some packages failed to install:
luka-2012.8.29 failed during the building phase. The exception was:
ExitFailure 1