Resolving dependencies... Configuring appar-0.1.4... Configuring auto-update-0.1.4... Building auto-update-0.1.4... Building appar-0.1.4... Installed auto-update-0.1.4 Configuring byteorder-1.0.4... Configuring bytestring-builder-0.10.8.1.0... Installed appar-0.1.4 Building byteorder-1.0.4... Building bytestring-builder-0.10.8.1.0... Configuring extensible-exceptions-0.1.1.4... Installed bytestring-builder-0.10.8.1.0 Building extensible-exceptions-0.1.1.4... Configuring mtl-2.2.1... Installed byteorder-1.0.4 Building mtl-2.2.1... Configuring network-2.6.3.1... Installed extensible-exceptions-0.1.1.4 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-0.6.1.0... Installed old-locale-1.0.0.7 Building primitive-0.6.1.0... Configuring random-1.1... Installed network-2.6.3.1 Configuring stm-2.4.4.1... Installed primitive-0.6.1.0 Building random-1.1... Building stm-2.4.4.1... Configuring stringsearch-0.3.6.6... Installed stm-2.4.4.1 Configuring text-1.2.2.1... Installed random-1.1 Building stringsearch-0.3.6.6... Building text-1.2.2.1... Configuring transformers-compat-0.5.1.4... Installed stringsearch-0.3.6.6 Building transformers-compat-0.5.1.4... Configuring unix-compat-0.4.3.1... Installed transformers-compat-0.5.1.4 Building unix-compat-0.4.3.1... Configuring utf8-string-1.0.1.1... Installed unix-compat-0.4.3.1 Building utf8-string-1.0.1.1... Configuring zlib-0.6.1.2... Installed utf8-string-1.0.1.1 Building zlib-0.6.1.2... Configuring word8-0.1.2... Installed text-1.2.2.1 Building word8-0.1.2... Installed word8-0.1.2 Configuring old-time-1.1.0.3... Configuring iproute-1.7.1... Installed zlib-0.6.1.2 Building iproute-1.7.1... Building old-time-1.1.0.3... Configuring simple-sendfile-0.2.25... Installed old-time-1.1.0.3 Building simple-sendfile-0.2.25... Configuring async-2.1.1... Installed iproute-1.7.1 Building async-2.1.1... Configuring vector-0.11.0.0... Installed simple-sendfile-0.2.25 Building vector-0.11.0.0... Configuring exceptions-0.8.3... Installed async-2.1.1 Building exceptions-0.8.3... Configuring transformers-base-0.4.4... Installed exceptions-0.8.3 Building transformers-base-0.4.4... Configuring blaze-builder-0.4.0.2... Installed transformers-base-0.4.4 Building blaze-builder-0.4.0.2... Configuring mmorph-1.0.9... Installed blaze-builder-0.4.0.2 Building mmorph-1.0.9... Configuring hashable-1.2.4.0... Installed mmorph-1.0.9 Building hashable-1.2.4.0... Configuring parsec-3.1.11... Installed hashable-1.2.4.0 Building parsec-3.1.11... Installed parsec-3.1.11 Configuring monad-control-1.0.1.0... Configuring streaming-commons-0.1.16... Installed vector-0.11.0.0 Building monad-control-1.0.1.0... Building streaming-commons-0.1.16... Configuring case-insensitive-1.2.0.7... Installed monad-control-1.0.1.0 Building case-insensitive-1.2.0.7... Configuring unordered-containers-0.2.7.2... Installed case-insensitive-1.2.0.7 Building unordered-containers-0.2.7.2... Configuring psqueues-0.2.2.3... Installed streaming-commons-0.1.16 Building psqueues-0.2.2.3... Installed psqueues-0.2.2.3 Configuring scientific-0.3.4.9... Installed unordered-containers-0.2.7.2 Configuring lifted-base-0.2.3.8... Building scientific-0.3.4.9... Building lifted-base-0.2.3.8... Configuring hashtables-1.2.1.0... Installed lifted-base-0.2.3.8 Building hashtables-1.2.1.0... Configuring http-types-0.9.1... Installed scientific-0.3.4.9 Building http-types-0.9.1... Configuring http2-1.6.2... Installed http-types-0.9.1 Building http2-1.6.2... Installed hashtables-1.2.1.0 Configuring vault-0.3.0.6... Building vault-0.3.0.6... Configuring resourcet-1.1.9... Installed vault-0.3.0.6 Building resourcet-1.1.9... Installed resourcet-1.1.9 Configuring attoparsec-0.13.1.0... Building attoparsec-0.13.1.0... Configuring RefSerialize-0.3.1.4... Installed http2-1.6.2 Building RefSerialize-0.3.1.4... Configuring wai-3.2.1.1... Installed RefSerialize-0.3.1.4 Building wai-3.2.1.1... Configuring conduit-1.2.8... Installed attoparsec-0.13.1.0 Building conduit-1.2.8... Installed wai-3.2.1.1 Configuring TCache-0.12.0... Building TCache-0.12.0... Configuring http-date-0.0.6.1... Installed conduit-1.2.8 Installed TCache-0.12.0 Configuring Workflow-0.8.3... Building http-date-0.0.6.1... Building Workflow-0.8.3... Installed http-date-0.0.6.1 Configuring warp-3.2.9... Building warp-3.2.9... Installed Workflow-0.8.3 Installed warp-3.2.9 Configuring MFlow-0.1.5.1... Building MFlow-0.1.5.1... Failed to install MFlow-0.1.5.1 Build log ( /home/builder/.cabal/logs/MFlow-0.1.5.1.log ): cabal: Entering directory '/tmp/cabal-tmp-19772/MFlow-0.1.5.1' Configuring MFlow-0.1.5.1... Building MFlow-0.1.5.1... Preprocessing library MFlow-0.1.5.1... [ 1 of 10] Compiling MFlow.Cookies ( src/MFlow/Cookies.hs, dist/build/MFlow/Cookies.o ) src/MFlow/Cookies.hs:189:18: error: • Ambiguous type variable ‘t1’ arising from an operator section prevents the constraint ‘(Foldable t1)’ from being solved. Probable fix: use a type annotation to specify what ‘t1’ should be. These potential instances exist: instance Foldable (Either a) -- Defined in ‘Data.Foldable’ instance Foldable Identity -- Defined in ‘Data.Functor.Identity’ instance Foldable Dual -- Defined in ‘Data.Foldable’ ...plus 7 others ...plus 19 instances involving out-of-scope types (use -fprint-potential-instances to see them all) • In the first argument of ‘satisfy’, namely ‘(`elem` "!*'(),/")’ In the expression: satisfy (`elem` "!*'(),/") In an equation for ‘extra’: extra = satisfy (`elem` "!*'(),/") src/MFlow/Cookies.hs:189:33: error: • Ambiguous type variable ‘t1’ arising from the literal ‘"!*'(),/"’ prevents the constraint ‘(Data.String.IsString (t1 Char))’ from being solved. Probable fix: use a type annotation to specify what ‘t1’ should be. These potential instances exist: instance Data.String.IsString a => Data.String.IsString (Identity a) -- Defined in ‘Data.Functor.Identity’ instance a ~ Char => Data.String.IsString [a] -- Defined in ‘Data.String’ ...plus one instance involving out-of-scope types (use -fprint-potential-instances to see them all) • In the second argument of ‘elem’, namely ‘"!*'(),/"’ In the first argument of ‘satisfy’, namely ‘(`elem` "!*'(),/")’ In the expression: satisfy (`elem` "!*'(),/") src/MFlow/Cookies.hs:192:17: error: • Ambiguous type variable ‘t0’ arising from an operator section prevents the constraint ‘(Foldable t0)’ from being solved. Probable fix: use a type annotation to specify what ‘t0’ should be. These potential instances exist: instance Foldable (Either a) -- Defined in ‘Data.Foldable’ instance Foldable Identity -- Defined in ‘Data.Functor.Identity’ instance Foldable Dual -- Defined in ‘Data.Foldable’ ...plus 7 others ...plus 19 instances involving out-of-scope types (use -fprint-potential-instances to see them all) • In the first argument of ‘satisfy’, namely ‘(`elem` "$-_.")’ In the expression: satisfy (`elem` "$-_.") In an equation for ‘safe’: safe = satisfy (`elem` "$-_.") src/MFlow/Cookies.hs:192:32: error: • Ambiguous type variable ‘t0’ arising from the literal ‘"$-_."’ prevents the constraint ‘(Data.String.IsString (t0 Char))’ from being solved. Probable fix: use a type annotation to specify what ‘t0’ should be. These potential instances exist: instance Data.String.IsString a => Data.String.IsString (Identity a) -- Defined in ‘Data.Functor.Identity’ instance a ~ Char => Data.String.IsString [a] -- Defined in ‘Data.String’ ...plus one instance involving out-of-scope types (use -fprint-potential-instances to see them all) • In the second argument of ‘elem’, namely ‘"$-_."’ In the first argument of ‘satisfy’, namely ‘(`elem` "$-_.")’ In the expression: satisfy (`elem` "$-_.") cabal: Leaving directory '/tmp/cabal-tmp-19772/MFlow-0.1.5.1' cabal: Error: some packages failed to install: MFlow-0.1.5.1 failed during the building phase. The exception was: ExitFailure 1