Resolving dependencies... Configuring FindBin-0.0.5... Configuring clock-0.7.2... Building clock-0.7.2... Building FindBin-0.0.5... Configuring random-1.1... Installed FindBin-0.0.5 Configuring mtl-2.2.1... Installed clock-0.7.2 Building random-1.1... Building mtl-2.2.1... Configuring stm-2.4.4.1... Installed random-1.1 Building stm-2.4.4.1... Installed mtl-2.2.1 Configuring vect-0.4.7... Installed stm-2.4.4.1 Building vect-0.4.7... Installed vect-0.4.7 Configuring HGamer3D-Data-0.5.0... Building HGamer3D-Data-0.5.0... Failed to install HGamer3D-Data-0.5.0 Build log ( /home/builder/.cabal/logs/HGamer3D-Data-0.5.0.log ): cabal: Entering directory '/tmp/cabal-tmp-9648/HGamer3D-Data-0.5.0' Configuring HGamer3D-Data-0.5.0... Building HGamer3D-Data-0.5.0... Preprocessing library HGamer3D-Data-0.5.0... [ 1 of 10] Compiling HGamer3D.Data.Window ( HGamer3D/Data/Window.hs, dist/build/HGamer3D/Data/Window.o ) [ 2 of 10] Compiling HGamer3D.Data.Vector ( HGamer3D/Data/Vector.hs, dist/build/HGamer3D/Data/Vector.o ) HGamer3D/Data/Vector.hs:27:1: warning: [-Wtabs] Tab character found here, and in one further location. Please use spaces instead. HGamer3D/Data/Vector.hs:38:9: warning: [-Wduplicate-exports] ‘zeroVec3’ is exported by ‘zeroVec3’ and ‘zeroVec3’ [ 3 of 10] Compiling HGamer3D.Data.TypeSynonyms ( HGamer3D/Data/TypeSynonyms.hs, dist/build/HGamer3D/Data/TypeSynonyms.o ) [ 4 of 10] Compiling HGamer3D.Data.HG3DClass ( HGamer3D/Data/HG3DClass.hs, dist/build/HGamer3D/Data/HG3DClass.o ) HGamer3D/Data/HG3DClass.hs:47:1: warning: [-Wtabs] Tab character found here, and in four further locations. Please use spaces instead. [ 5 of 10] Compiling HGamer3D.Data.Geometry2D ( HGamer3D/Data/Geometry2D.hs, dist/build/HGamer3D/Data/Geometry2D.o ) [ 6 of 10] Compiling HGamer3D.Data.GameTime ( HGamer3D/Data/GameTime.hs, dist/build/HGamer3D/Data/GameTime.o ) HGamer3D/Data/GameTime.hs:61:10: error: Duplicate instance declarations: instance Num GameTime -- Defined at HGamer3D/Data/GameTime.hs:61:10 instance [safe] Num C.TimeSpec -- Defined in ‘System.Clock’ cabal: Leaving directory '/tmp/cabal-tmp-9648/HGamer3D-Data-0.5.0' cabal: Error: some packages failed to install: HGamer3D-Data-0.5.0 failed during the building phase. The exception was: ExitFailure 1 HGamer3D-Ogre-Binding-0.4.0 depends on HGamer3D-Data-0.5.0 which failed to install.