Resolving dependencies... Configuring data-default-class-0.1.2.0... Configuring charsetdetect-ae-1.1.0.3... Building charsetdetect-ae-1.1.0.3... Building data-default-class-0.1.2.0... Installed data-default-class-0.1.2.0 Configuring dlist-0.8.0.3... Building dlist-0.8.0.3... Configuring fingertree-0.1.1.0... Installed dlist-0.8.0.3 Building fingertree-0.1.1.0... Configuring fmlist-0.9... Installed charsetdetect-ae-1.1.0.3 Building fmlist-0.9... Configuring generic-deriving-1.11.2... Installed fmlist-0.9 Configuring integer-logarithms-1.0.2... Installed fingertree-0.1.1.0 Building generic-deriving-1.11.2... Building integer-logarithms-1.0.2... Configuring mtl-2.2.1... Installed integer-logarithms-1.0.2 Building mtl-2.2.1... Configuring microlens-0.4.8.1... Installed mtl-2.2.1 Building microlens-0.4.8.1... Configuring old-locale-1.0.0.7... Installed microlens-0.4.8.1 Building old-locale-1.0.0.7... Configuring oo-prototypes-0.1.0.0... Installed old-locale-1.0.0.7 Building oo-prototypes-0.1.0.0... Configuring parallel-3.2.1.1... Installed oo-prototypes-0.1.0.0 Building parallel-3.2.1.1... Configuring primitive-0.6.2.0... Installed parallel-3.2.1.1 Building primitive-0.6.2.0... Configuring pointedlist-0.6.1... Installed generic-deriving-1.11.2 Building pointedlist-0.6.1... Configuring semigroups-0.18.3... Installed pointedlist-0.6.1 Building semigroups-0.18.3... Configuring split-0.2.3.2... Installed semigroups-0.18.3 Building split-0.2.3.2... Configuring stm-2.4.4.1... Installed primitive-0.6.2.0 Building stm-2.4.4.1... Configuring transformers-compat-0.5.1.4... Installed split-0.2.3.2 Building transformers-compat-0.5.1.4... Configuring text-1.2.2.2... Installed transformers-compat-0.5.1.4 Configuring utf8-string-1.0.1.1... Installed stm-2.4.4.1 Building text-1.2.2.2... Building utf8-string-1.0.1.1... Configuring data-default-instances-containers-0.0.1... Installed utf8-string-1.0.1.1 Building data-default-instances-containers-0.0.1... Configuring xdg-basedir-0.2.2... Installed data-default-instances-containers-0.0.1 Building xdg-basedir-0.2.2... Configuring unix-compat-0.4.3.1... Installed xdg-basedir-0.2.2 Building unix-compat-0.4.3.1... Installed unix-compat-0.4.3.1 Configuring data-default-instances-dlist-0.0.1... Building data-default-instances-dlist-0.0.1... Configuring microlens-ghc-0.4.8.0... Installed data-default-instances-dlist-0.0.1 Building microlens-ghc-0.4.8.0... Configuring data-default-instances-old-locale-0.0.1... Installed microlens-ghc-0.4.8.0 Building data-default-instances-old-locale-0.0.1... Configuring microlens-th-0.4.1.1... Installed text-1.2.2.2 Building microlens-th-0.4.1.1... Configuring regex-base-0.93.2... Installed data-default-instances-old-locale-0.0.1 Building regex-base-0.93.2... Configuring microlens-mtl-0.1.11.0... Installed regex-base-0.93.2 Building microlens-mtl-0.1.11.0... Configuring transformers-base-0.4.4... Installed microlens-th-0.4.1.1 Configuring vector-0.12.0.1... Installed microlens-mtl-0.1.11.0 Building transformers-base-0.4.4... Building vector-0.12.0.1... Installed transformers-base-0.4.4 Configuring blaze-builder-0.4.0.2... Building blaze-builder-0.4.0.2... Configuring hashable-1.2.6.1... Installed blaze-builder-0.4.0.2 Building hashable-1.2.6.1... Configuring text-icu-0.7.0.1... Installed hashable-1.2.6.1 Building text-icu-0.7.0.1... Configuring parsec-3.1.11... Installed text-icu-0.7.0.1 Building parsec-3.1.11... Configuring data-default-0.7.1.1... Installed vector-0.12.0.1 Building data-default-0.7.1.1... Installed data-default-0.7.1.1 Configuring unordered-containers-0.2.8.0... Configuring scientific-0.3.5.2... Installed parsec-3.1.11 Building unordered-containers-0.2.8.0... Building scientific-0.3.5.2... Configuring ListLike-4.5.1... Installed scientific-0.3.5.2 Building ListLike-4.5.1... Configuring yi-rope-0.9... Installed unordered-containers-0.2.8.0 Building yi-rope-0.9... Installed yi-rope-0.9 Configuring regex-tdfa-1.2.2... Building regex-tdfa-1.2.2... Configuring vty-5.17.1... Installed ListLike-4.5.1 Building vty-5.17.1... Configuring attoparsec-0.13.2.0... Installed regex-tdfa-1.2.2 Building attoparsec-0.13.2.0... Configuring dynamic-state-0.3... Installed attoparsec-0.13.2.0 Building dynamic-state-0.3... Configuring microlens-platform-0.3.9.0... Installed dynamic-state-0.3 Building microlens-platform-0.3.9.0... Installed microlens-platform-0.3.9.0 Configuring yi-language-0.15.0... Building yi-language-0.15.0... Configuring process-extras-0.7.2... Installed yi-language-0.15.0 Building process-extras-0.7.2... Installed process-extras-0.7.2 Configuring yi-core-0.14.1... Building yi-core-0.14.1... Installed vty-5.17.1 Installed yi-core-0.14.1 Configuring yi-frontend-vty-0.15.0... Building yi-frontend-vty-0.15.0... Failed to install yi-frontend-vty-0.15.0 Build log ( /home/builder/.cabal/logs/yi-frontend-vty-0.15.0.log ): cabal: Entering directory '/tmp/cabal-tmp-4887/yi-frontend-vty-0.15.0' Configuring yi-frontend-vty-0.15.0... Building yi-frontend-vty-0.15.0... Preprocessing library yi-frontend-vty-0.15.0... [1 of 4] Compiling Yi.Frontend.Vty.Conversions ( src/Yi/Frontend/Vty/Conversions.hs, dist/build/Yi/Frontend/Vty/Conversions.o ) [2 of 4] Compiling Yi.Frontend.Vty ( src/Yi/Frontend/Vty.hs, dist/build/Yi/Frontend/Vty.o ) src/Yi/Frontend/Vty.hs:168:24-29: error: • Couldn't match type ‘Bool’ with ‘Maybe ExitCode’ Expected type: Bool -> IO () Actual type: Maybe ExitCode -> IO () • In the ‘end’ field of a record In the second argument of ‘($!)’, namely ‘Common.dummyUI {Common.main = main fs, Common.end = end fs, Common.refresh = requestRefresh fs, Common.userForceRefresh = Vty.refresh vty, Common.layout = layout fs}’ In a stmt of a 'do' block: return $! Common.dummyUI {Common.main = main fs, Common.end = end fs, Common.refresh = requestRefresh fs, Common.userForceRefresh = Vty.refresh vty, Common.layout = layout fs} cabal: Leaving directory '/tmp/cabal-tmp-4887/yi-frontend-vty-0.15.0' cabal: Error: some packages failed to install: yi-frontend-vty-0.15.0 failed during the building phase. The exception was: ExitFailure 1