Resolving dependencies... Configuring mtl-2.2.1... Configuring random-1.1... Building mtl-2.2.1... Building random-1.1... Installed random-1.1 Configuring stm-2.4.4.1... Building stm-2.4.4.1... Configuring transformers-compat-0.5.1.4... Installed mtl-2.2.1 Building transformers-compat-0.5.1.4... Configuring syb-0.6... Installed transformers-compat-0.5.1.4 Installed stm-2.4.4.1 Configuring exceptions-0.8.3... Building syb-0.6... Building exceptions-0.8.3... Installed exceptions-0.8.3 Configuring bimap-0.3.2... Installed syb-0.6 Building bimap-0.3.2... Installed bimap-0.3.2 Configuring atom-1.0.13... Building atom-1.0.13... Installed atom-1.0.13 Configuring copilot-1.0.1... Building copilot-1.0.1... Failed to install copilot-1.0.1 Build log ( /home/builder/.cabal/logs/copilot-1.0.1.log ): cabal: Entering directory '/tmp/cabal-tmp-8656/copilot-1.0.1' Configuring copilot-1.0.1... Building copilot-1.0.1... Preprocessing library copilot-1.0.1... [ 1 of 27] Compiling Language.Copilot.Help ( Language/Copilot/Help.hs, dist/build/Language/Copilot/Help.o ) [ 2 of 27] Compiling Language.Copilot.Core ( Language/Copilot/Core.hs, dist/build/Language/Copilot/Core.o ) Language/Copilot/Core.hs:404:17: error: Not in scope: type variable ‘a’ Language/Copilot/Core.hs:404:31: error: Not in scope: type variable ‘a’ Language/Copilot/Core.hs:441:17: error: Not in scope: type variable ‘a’ Language/Copilot/Core.hs:441:31: error: Not in scope: type variable ‘a’ Language/Copilot/Core.hs:441:42: error: Not in scope: type variable ‘a’ cabal: Leaving directory '/tmp/cabal-tmp-8656/copilot-1.0.1' cabal: Error: some packages failed to install: copilot-1.0.1 failed during the building phase. The exception was: ExitFailure 1