Resolving dependencies... Configuring Codec-Image-DevIL-0.2.3... Configuring ObjectName-1.1.0.1... Building ObjectName-1.1.0.1... Building Codec-Image-DevIL-0.2.3... Failed to install Codec-Image-DevIL-0.2.3 Build log ( /home/builder/.cabal/logs/Codec-Image-DevIL-0.2.3.log ): cabal: Entering directory '/tmp/cabal-tmp-3586/Codec-Image-DevIL-0.2.3' Configuring Codec-Image-DevIL-0.2.3... Building Codec-Image-DevIL-0.2.3... Preprocessing library Codec-Image-DevIL-0.2.3... [1 of 1] Compiling Codec.Image.DevIL ( dist/build/Codec/Image/DevIL.hs, dist/build/Codec/Image/DevIL.o ) Codec/Image/DevIL.hsc:154:1: error: • Non type-variable argument in the constraint: MArray a t IO (Use FlexibleContexts to permit this) • When checking the inferred type lazyElems :: forall i (a :: * -> * -> *) t. (MArray a t IO, Ix i) => a i t -> IO [t] Codec/Image/DevIL.hsc:165:11: error: Variable not in scope: unsafeThaw :: UArray (Int, Int, Int) Word8 -> IO (StorableArray i0 a1) cabal: Leaving directory '/tmp/cabal-tmp-3586/Codec-Image-DevIL-0.2.3' Configuring data-reify-0.6.1... Building data-reify-0.6.1... Configuring fixed-0.2.1.1... Installed ObjectName-1.1.0.1 Building fixed-0.2.1.1... Configuring stm-2.4.4.1... Installed data-reify-0.6.1 Building stm-2.4.4.1... Configuring half-0.2.2.3... Installed fixed-0.2.1.1 Building half-0.2.2.3... Configuring text-1.2.2.1... Installed half-0.2.2.3 Installed stm-2.4.4.1 Configuring StateVar-1.1.0.4... Building text-1.2.2.1... Building StateVar-1.1.0.4... Installed StateVar-1.1.0.4 Installed text-1.2.2.1 Configuring OpenGLRaw-3.2.4.0... Building OpenGLRaw-3.2.4.0... Installed OpenGLRaw-3.2.4.0 Configuring GLURaw-2.0.0.3... Building GLURaw-2.0.0.3... Installed GLURaw-2.0.0.3 Configuring OpenGL-3.0.1.0... Building OpenGL-3.0.1.0... Installed OpenGL-3.0.1.0 Configuring GLUT-2.7.0.10... Building GLUT-2.7.0.10... Installed GLUT-2.7.0.10 cabal: Error: some packages failed to install: Codec-Image-DevIL-0.2.3 failed during the building phase. The exception was: ExitFailure 1 chalkboard-1.9.0.15 depends on Codec-Image-DevIL-0.2.3 which failed to install.