Resolving dependencies... Configuring ObjectName-1.1.0.1... Configuring data-accessor-0.2.2.7... Building ObjectName-1.1.0.1... Building data-accessor-0.2.2.7... Installed ObjectName-1.1.0.1 Configuring fixed-0.2.1.1... Building fixed-0.2.1.1... Installed data-accessor-0.2.2.7 Configuring half-0.2.2.3... Building half-0.2.2.3... Configuring stm-2.4.4.1... Installed fixed-0.2.1.1 Building stm-2.4.4.1... Configuring utility-ht-0.0.12... Installed half-0.2.2.3 Building utility-ht-0.0.12... Configuring text-1.2.2.1... Installed stm-2.4.4.1 Building text-1.2.2.1... Configuring StateVar-1.1.0.4... Installed utility-ht-0.0.12 Building StateVar-1.1.0.4... Installed StateVar-1.1.0.4 Configuring data-accessor-template-0.2.1.13... Building data-accessor-template-0.2.1.13... Installed data-accessor-template-0.2.1.13 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 GLFW-0.5.2.5... Building GLFW-0.5.2.5... Installed GLFW-0.5.2.5 Configuring HPong-0.1... Building HPong-0.1... Failed to install HPong-0.1 Build log ( /home/builder/.cabal/logs/HPong-0.1.log ): cabal: Entering directory '/tmp/cabal-tmp-20455/HPong-0.1' Configuring HPong-0.1... Warning: 'ghc-options: -prof' is not necessary and will lead to problems when used on a library. Use the configure flag --enable-library-profiling and/or --enable-profiling. Building HPong-0.1... Preprocessing executable 'hpong' for HPong-0.1... [1 of 1] Compiling Main ( HPong.hs, dist/build/hpong/hpong-tmp/Main.o ) HPong.hs:60:35: error: Variable not in scope: windowParam :: Opened -> t0 cabal: Leaving directory '/tmp/cabal-tmp-20455/HPong-0.1' cabal: Error: some packages failed to install: HPong-0.1 failed during the building phase. The exception was: ExitFailure 1