Resolving dependencies... Configuring mtl-2.2.1... Configuring primes-0.2.1.0... Building primes-0.2.1.0... Building mtl-2.2.1... Installed primes-0.2.1.0 Configuring random-1.0.1.1... Building random-1.0.1.1... Configuring superdoc-0.1.2.4... Installed mtl-2.2.1 Configuring zlib-0.6.1.2... Installed random-1.0.1.1 Building zlib-0.6.1.2... Building superdoc-0.1.2.4... Installed zlib-0.6.1.2 Installed superdoc-0.1.2.4 Configuring easyrender-0.1.1.2... Building easyrender-0.1.1.2... Installed easyrender-0.1.1.2 Configuring quipper-0.8... Building quipper-0.8... Failed to install quipper-0.8 Build log ( /home/builder/.cabal/logs/quipper-0.8.log ): cabal: Entering directory '/tmp/cabal-tmp-15308/quipper-0.8' Configuring quipper-0.8... Building quipper-0.8... Preprocessing library quipper-0.8... src/Quipper/QData.hs:15:12: warning: -fcontext-stack=50 is deprecated: use -freduction-depth=50 instead src/Quipper/Labels.hs:12:14: warning: -XOverlappingInstances is deprecated: instead use per-instance pragmas OVERLAPPING/OVERLAPPABLE/OVERLAPS [ 1 of 26] Compiling Libraries.Typeable ( src/Libraries/Typeable.hs, dist/build/Libraries/Typeable.o ) [ 2 of 26] Compiling Libraries.Tuple ( src/Libraries/Tuple.hs, dist/build/Libraries/Tuple.o ) [ 3 of 26] Compiling Libraries.Template.ErrorMsgQ ( src/Libraries/Template/ErrorMsgQ.hs, dist/build/Libraries/Template/ErrorMsgQ.o ) [ 4 of 26] Compiling Libraries.Template.LiftQ ( src/Libraries/Template/LiftQ.hs, dist/build/Libraries/Template/LiftQ.o ) [ 5 of 26] Compiling Libraries.Template.Lifting ( src/Libraries/Template/Lifting.hs, dist/build/Libraries/Template/Lifting.o ) [ 6 of 26] Compiling Libraries.ShowAll ( src/Libraries/ShowAll.hs, dist/build/Libraries/ShowAll.o ) src/Libraries/ShowAll.hs:28:10: error: • Overlapping instances for Show (a -> b) arising from a use of ‘GHC.Show.$dmshowsPrec’ Matching instances: instance Show s -- Defined at src/Libraries/ShowAll.hs:31:10 instance Show (a -> b) -- Defined at src/Libraries/ShowAll.hs:28:10 • In the expression: GHC.Show.$dmshowsPrec @a -> b In an equation for ‘showsPrec’: showsPrec = GHC.Show.$dmshowsPrec @a -> b In the instance declaration for ‘Show (a -> b)’ src/Libraries/ShowAll.hs:28:10: error: • Overlapping instances for Show (a -> b) arising from a use of ‘GHC.Show.$dmshowList’ Matching instances: instance Show s -- Defined at src/Libraries/ShowAll.hs:31:10 instance Show (a -> b) -- Defined at src/Libraries/ShowAll.hs:28:10 • In the expression: GHC.Show.$dmshowList @a -> b In an equation for ‘showList’: showList = GHC.Show.$dmshowList @a -> b In the instance declaration for ‘Show (a -> b)’ cabal: Leaving directory '/tmp/cabal-tmp-15308/quipper-0.8' cabal: Error: some packages failed to install: quipper-0.8 failed during the building phase. The exception was: ExitFailure 1