Resolving dependencies... Configuring data-binary-ieee754-0.4.4... Configuring memory-0.13... Building data-binary-ieee754-0.4.4... Building memory-0.13... Installed data-binary-ieee754-0.4.4 Configuring mtl-2.2.1... Building mtl-2.2.1... Configuring network-2.6.3.1... Installed mtl-2.2.1 Configuring network-info-0.2.0.8... Installed memory-0.13 Building network-info-0.2.0.8... Building network-2.6.3.1... Configuring random-1.1... Installed network-info-0.2.0.8 Building random-1.1... Configuring stm-2.4.4.1... Installed random-1.1 Building stm-2.4.4.1... Configuring text-1.2.2.1... Installed stm-2.4.4.1 Installed network-2.6.3.1 Configuring cryptonite-0.20... Building text-1.2.2.1... Building cryptonite-0.20... Installed text-1.2.2.1 Configuring hashable-1.2.4.0... Building hashable-1.2.4.0... Installed hashable-1.2.4.0 Configuring uuid-types-1.0.3... Building uuid-types-1.0.3... Installed uuid-types-1.0.3 Installed cryptonite-0.20 Configuring uuid-1.3.12... Building uuid-1.3.12... Installed uuid-1.3.12 Configuring hascas-0.1.0.0... Building hascas-0.1.0.0... Failed to install hascas-0.1.0.0 Build log ( /home/builder/.cabal/logs/hascas-0.1.0.0.log ): cabal: Entering directory '/tmp/cabal-tmp-5355/hascas-0.1.0.0' Configuring hascas-0.1.0.0... Building hascas-0.1.0.0... Preprocessing library hascas-0.1.0.0... [1 of 8] Compiling Common ( src/Common.hs, dist/build/Common.o ) [2 of 8] Compiling Derive ( src/Derive.hs, dist/build/Derive.o ) src/Derive.hs:39:11: error: • The constructor ‘DataD’ should have 6 arguments, but has been given 5 • In the pattern: DataD _ cName _ constructors _ In the pattern: TyConI (DataD _ cName _ constructors _) In a stmt of a 'do' block: TyConI (DataD _ cName _ constructors _) <- reify a cabal: Leaving directory '/tmp/cabal-tmp-5355/hascas-0.1.0.0' cabal: Error: some packages failed to install: hascas-0.1.0.0 failed during the building phase. The exception was: ExitFailure 1