Resolving dependencies... Configuring base-prelude-1.0.1.1... Configuring call-stack-0.1.0... Building base-prelude-1.0.1.1... Building call-stack-0.1.0... Installed call-stack-0.1.0 Configuring focus-0.1.5... Configuring mtl-2.2.1... Installed base-prelude-1.0.1.1 Building focus-0.1.5... Building mtl-2.2.1... Configuring network-2.6.3.1... Installed focus-0.1.5 Building network-2.6.3.1... Configuring primitive-0.6.2.0... Installed mtl-2.2.1 Building primitive-0.6.2.0... Configuring old-locale-1.0.0.7... Installed network-2.6.3.1 Configuring stm-2.4.4.1... Installed primitive-0.6.2.0 Building old-locale-1.0.0.7... Building stm-2.4.4.1... Configuring random-1.1... Installed old-locale-1.0.0.7 Building random-1.1... Configuring transformers-compat-0.5.1.4... Installed stm-2.4.4.1 Building transformers-compat-0.5.1.4... Configuring text-1.2.2.1... Installed random-1.1 Configuring HUnit-1.5.0.0... Installed transformers-compat-0.5.1.4 Building text-1.2.2.1... 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 old-time-1.1.0.3... Installed regex-base-0.93.2 Building old-time-1.1.0.3... Configuring async-2.1.1... Installed old-time-1.1.0.3 Building async-2.1.1... Configuring hslogger-1.2.10... Installed async-2.1.1 Building hslogger-1.2.10... Configuring transformers-base-0.4.4... Installed text-1.2.2.1 Building transformers-base-0.4.4... Configuring mmorph-1.0.9... Installed transformers-base-0.4.4 Installed hslogger-1.2.10 Configuring regex-posix-0.95.2... Building mmorph-1.0.9... Building regex-posix-0.95.2... Configuring hashable-1.2.4.0... Installed mmorph-1.0.9 Building hashable-1.2.4.0... Configuring parsec-3.1.11... Installed regex-posix-0.95.2 Building parsec-3.1.11... Configuring polyparse-1.12... Installed hashable-1.2.4.0 Building polyparse-1.12... Configuring monad-control-1.0.1.0... Installed parsec-3.1.11 Building monad-control-1.0.1.0... Configuring regex-compat-0.95.1... Installed polyparse-1.12 Installed monad-control-1.0.1.0 Configuring list-t-1... Building regex-compat-0.95.1... Building list-t-1... Configuring cpphs-1.20.2... Installed regex-compat-0.95.1 Building cpphs-1.20.2... Installed list-t-1 Configuring MissingH-1.4.0.1... Building MissingH-1.4.0.1... Configuring stm-containers-0.2.15... Installed cpphs-1.20.2 Building stm-containers-0.2.15... Installed stm-containers-0.2.15 Configuring haskell-src-exts-1.19.0... Installed MissingH-1.4.0.1 Building haskell-src-exts-1.19.0... Installed haskell-src-exts-1.19.0 Configuring file-modules-0.1.0.0... Building file-modules-0.1.0.0... Failed to install file-modules-0.1.0.0 Build log ( /home/builder/.cabal/logs/file-modules-0.1.0.0.log ): cabal: Entering directory '/tmp/cabal-tmp-1712/file-modules-0.1.0.0' Configuring file-modules-0.1.0.0... Building file-modules-0.1.0.0... Preprocessing library file-modules-0.1.0.0... [1 of 1] Compiling Development.FileModules ( src/Development/FileModules.hs, dist/build/Development/FileModules.o ) src/Development/FileModules.hs:36:15: error: • Ambiguous type variable ‘t0’ arising from a use of ‘parse’ prevents the constraint ‘(haskell-src-exts-1.19.0:Language.Haskell.Exts.ParseMonad.Parseable (NonGreedy t0))’ from being solved. Probable fix: use a type annotation to specify what ‘t0’ should be. These potential instances exist: four instances involving out-of-scope types (use -fprint-potential-instances to see them all) • In the first argument of ‘(<$>)’, namely ‘parse’ In a stmt of a 'do' block: result <- parse <$> readFile fname In the expression: do { result <- parse <$> readFile fname; case result of { (ParseOk (NonGreedy {..})) -> do { ... } (ParseFailed _ _) -> error $ "Failed to parse module in " ++ fname } } src/Development/FileModules.hs:39:18: error: • The constructor ‘ModuleHeadAndImports’ should have 4 arguments, but has been given 3 • In the pattern: ModuleHeadAndImports _ _ mimports In a pattern binding: (ModuleHeadAndImports _ _ mimports) = unNonGreedy In the expression: do { let (ModuleHeadAndImports _ _ mimports) = unNonGreedy; forM mimports $ \ imp -> let ... in return iname } src/Development/FileModules.hs:41:21: error: • The constructor ‘ModuleName’ should have 2 arguments, but has been given 1 • In the pattern: ModuleName iname In a pattern binding: ModuleName iname = importModule imp In the expression: let ModuleName iname = importModule imp in return iname cabal: Leaving directory '/tmp/cabal-tmp-1712/file-modules-0.1.0.0' cabal: Error: some packages failed to install: file-modules-0.1.0.0 failed during the building phase. The exception was: ExitFailure 1