Resolving dependencies... Configuring ObjectName-1.1.0.1... Configuring bmp-1.2.6.3... Building bmp-1.2.6.3... Building ObjectName-1.1.0.1... Installed ObjectName-1.1.0.1 Configuring fixed-0.2.1.1... Building fixed-0.2.1.1... Configuring half-0.2.2.3... Installed fixed-0.2.1.1 Building half-0.2.2.3... Configuring stm-2.4.4.1... Installed bmp-1.2.6.3 Building stm-2.4.4.1... Configuring text-1.2.2.1... Installed half-0.2.2.3 Building text-1.2.2.1... Installed stm-2.4.4.1 Configuring StateVar-1.1.0.4... 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-2.7.0.11... Building GLUT-2.7.0.11... Installed GLUT-2.7.0.11 Configuring gloss-rendering-1.11.1.1... Building gloss-rendering-1.11.1.1... Installed gloss-rendering-1.11.1.1 Configuring gloss-1.11.1.1... Building gloss-1.11.1.1... Installed gloss-1.11.1.1 Configuring haskell-go-checkers-0.1.0.0... Building haskell-go-checkers-0.1.0.0... Failed to install haskell-go-checkers-0.1.0.0 Build log ( /home/builder/.cabal/logs/haskell-go-checkers-0.1.0.0.log ): cabal: Entering directory '/tmp/cabal-tmp-32193/haskell-go-checkers-0.1.0.0' Configuring haskell-go-checkers-0.1.0.0... Building haskell-go-checkers-0.1.0.0... Preprocessing executable 'haskell-go-checkers' for haskell-go-checkers-0.1.0.0... [1 of 1] Compiling Main ( src/Main.hs, dist/build/haskell-go-checkers/haskell-go-checkers-tmp/Main.o ) src/Main.hs:6:1: error: Failed to load interface for ‘Go’ Use -v to see a list of the files searched for. src/Main.hs:7:1: error: Failed to load interface for ‘Checkers’ Use -v to see a list of the files searched for. cabal: Leaving directory '/tmp/cabal-tmp-32193/haskell-go-checkers-0.1.0.0' cabal: Error: some packages failed to install: haskell-go-checkers-0.1.0.0 failed during the building phase. The exception was: ExitFailure 1