Resolving dependencies... Configuring ansi-terminal-0.6.2.3... Configuring call-stack-0.1.0... Building ansi-terminal-0.6.2.3... Building call-stack-0.1.0... Installed call-stack-0.1.0 Configuring mtl-2.2.1... Building mtl-2.2.1... Installed ansi-terminal-0.6.2.3 Configuring network-2.6.3.1... Building network-2.6.3.1... Configuring old-locale-1.0.0.7... Installed mtl-2.2.1 Building old-locale-1.0.0.7... Configuring primitive-0.6.2.0... Installed old-locale-1.0.0.7 Building primitive-0.6.2.0... Configuring projectroot-0.2.0.1... Installed network-2.6.3.1 Building projectroot-0.2.0.1... Configuring random-1.1... Installed primitive-0.6.2.0 Configuring terminal-size-0.3.2.1... Installed projectroot-0.2.0.1 Building random-1.1... Building terminal-size-0.3.2.1... Configuring stm-2.4.4.1... Installed terminal-size-0.3.2.1 Building stm-2.4.4.1... Configuring transformers-compat-0.5.1.4... Installed random-1.1 Building transformers-compat-0.5.1.4... Configuring text-1.2.2.1... Installed transformers-compat-0.5.1.4 Configuring vty-3.0.2... Installed stm-2.4.4.1 Building text-1.2.2.1... Building vty-3.0.2... Configuring zlib-0.6.1.2... Failed to install vty-3.0.2 Build log ( /home/builder/.cabal/logs/vty-3.0.2.log ): cabal: Entering directory '/tmp/cabal-tmp-24892/vty-3.0.2' Configuring vty-3.0.2... Building vty-3.0.2... Preprocessing library vty-3.0.2... Graphics/Vty.hs:1:16: warning: -fffi is deprecated: use -XForeignFunctionInterface or pragma {-# LANGUAGE ForeignFunctionInterface #-} instead Graphics/Vty/Cursor.hs:1:16: warning: -fffi is deprecated: use -XForeignFunctionInterface or pragma {-# LANGUAGE ForeignFunctionInterface #-} instead [1 of 4] Compiling Graphics.Vty.Types ( Graphics/Vty/Types.hs, dist/build/Graphics/Vty/Types.o ) [2 of 4] Compiling Graphics.Vty.LLInput ( Graphics/Vty/LLInput.hs, dist/build/Graphics/Vty/LLInput.o ) Graphics/Vty/LLInput.hs:71:9: error: • Variable not in scope: catch :: IO Char -> (t0 -> IO Char) -> t • Perhaps you meant data constructor ‘Catch’ (imported from System.Posix.Signals) cabal: Leaving directory '/tmp/cabal-tmp-24892/vty-3.0.2' Building zlib-0.6.1.2... Configuring HUnit-1.5.0.0... Installed zlib-0.6.1.2 Building HUnit-1.5.0.0... Installed HUnit-1.5.0.0 Configuring regex-base-0.93.2... Building regex-base-0.93.2... Configuring hslogger-1.2.10... Installed regex-base-0.93.2 Building hslogger-1.2.10... Configuring mmorph-1.0.9... Installed text-1.2.2.1 Building mmorph-1.0.9... Configuring old-time-1.1.0.3... Installed hslogger-1.2.10 Building old-time-1.1.0.3... Configuring async-2.1.1... Installed mmorph-1.0.9 Building async-2.1.1... Configuring transformers-base-0.4.4... Installed async-2.1.1 Configuring exceptions-0.8.3... Installed old-time-1.1.0.3 Building transformers-base-0.4.4... Building exceptions-0.8.3... Installed transformers-base-0.4.4 Configuring regex-posix-0.95.2... Building regex-posix-0.95.2... Configuring attoparsec-0.10.4.0... Installed exceptions-0.8.3 Building attoparsec-0.10.4.0... Configuring blaze-builder-0.4.0.2... Installed regex-posix-0.95.2 Building blaze-builder-0.4.0.2... Configuring parsec-3.1.11... Installed blaze-builder-0.4.0.2 Building parsec-3.1.11... Configuring monad-control-1.0.1.0... Installed attoparsec-0.10.4.0 Building monad-control-1.0.1.0... Installed monad-control-1.0.1.0 Configuring regex-compat-0.95.1... Building regex-compat-0.95.1... Configuring lifted-base-0.2.3.8... Installed regex-compat-0.95.1 Building lifted-base-0.2.3.8... Configuring streaming-commons-0.1.16... Installed parsec-3.1.11 Building streaming-commons-0.1.16... Installed lifted-base-0.2.3.8 Configuring resourcet-1.1.8.1... Building resourcet-1.1.8.1... Configuring MissingH-1.4.0.1... Installed resourcet-1.1.8.1 Building MissingH-1.4.0.1... Configuring conduit-1.2.8... Installed streaming-commons-0.1.16 Building conduit-1.2.8... Installed conduit-1.2.8 Configuring conduit-extra-1.1.15... Building conduit-extra-1.1.15... Installed MissingH-1.4.0.1 Installed conduit-extra-1.1.15 cabal: Error: some packages failed to install: stack-run-0.1.1.3 depends on vty-3.0.2 which failed to install. vty-3.0.2 failed during the building phase. The exception was: ExitFailure 1