Warning: The install command is a part of the legacy v1 style of cabal usage. Please switch to using either the new project style and the new-install command or the legacy v1-install alias as new-style projects will become the default in the next version of cabal-install. Please file a bug if you cannot replicate a working v1- use case with the new-style commands. For more information, see: https://wiki.haskell.org/Cabal/NewBuild Resolving dependencies... Starting appar-0.1.8 Starting auto-update-0.1.6 Starting base-orphans-0.8.1 Starting base-compat-0.10.5 Building auto-update-0.1.6 Building appar-0.1.8 Building base-orphans-0.8.1 Building base-compat-0.10.5 Completed base-orphans-0.8.1 Starting base64-bytestring-1.0.0.2 Completed appar-0.1.8 Starting blaze-builder-0.4.1.0 Completed auto-update-0.1.6 Starting bsb-http-chunked-0.0.0.4 Building base64-bytestring-1.0.0.2 Building blaze-builder-0.4.1.0 Building bsb-http-chunked-0.0.0.4 Completed bsb-http-chunked-0.0.0.4 Starting byteorder-1.0.4 Completed base64-bytestring-1.0.0.2 Starting cabal-doctest-1.0.6 Building byteorder-1.0.4 Building cabal-doctest-1.0.6 Completed blaze-builder-0.4.1.0 Starting colour-2.3.5 Completed byteorder-1.0.4 Starting data-default-class-0.1.2.0 Completed base-compat-0.10.5 Starting dlist-0.8.0.6 Building colour-2.3.5 Building data-default-class-0.1.2.0 Building dlist-0.8.0.6 Completed cabal-doctest-1.0.6 Starting easy-file-0.2.2 Completed data-default-class-0.1.2.0 Starting hashable-1.2.7.0 Building easy-file-0.2.2 Building hashable-1.2.7.0 Completed dlist-0.8.0.6 Starting integer-logarithms-1.0.3 Building integer-logarithms-1.0.3 Completed easy-file-0.2.2 Starting network-3.1.0.1 Completed integer-logarithms-1.0.3 Starting network-byte-order-0.1.1.0 Building network-byte-order-0.1.1.0 Completed hashable-1.2.7.0 Starting old-locale-1.0.0.7 Building old-locale-1.0.0.7 Completed colour-2.3.5 Starting path-pieces-0.2.1 Building path-pieces-0.2.1 Building network-3.1.0.1 Completed old-locale-1.0.0.7 Starting primitive-0.7.0.0 Completed network-byte-order-0.1.1.0 Starting random-1.1 Building primitive-0.7.0.0 Building random-1.1 Completed path-pieces-0.2.1 Starting semigroups-0.19 Building semigroups-0.19 Completed semigroups-0.19 Starting tagged-0.8.6 Building tagged-0.8.6 Completed random-1.1 Starting th-abstraction-0.3.1.0 Building th-abstraction-0.3.1.0 Completed tagged-0.8.6 Starting transformers-compat-0.6.5 Building transformers-compat-0.6.5 Completed network-3.1.0.1 Starting unix-compat-0.5.1 Building unix-compat-0.5.1 Completed th-abstraction-0.3.1.0 Starting unliftio-core-0.1.2.0 Building unliftio-core-0.1.2.0 Completed transformers-compat-0.6.5 Starting utf8-string-1.0.1.1 Building utf8-string-1.0.1.1 Completed unix-compat-0.5.1 Starting void-0.7.3 Building void-0.7.3 Completed unliftio-core-0.1.2.0 Starting word8-0.1.3 Building word8-0.1.3 Completed void-0.7.3 Starting zlib-0.6.2 Completed primitive-0.7.0.0 Starting time-compat-1.9.2.2 Building zlib-0.6.2 Building time-compat-1.9.2.2 Completed word8-0.1.3 Starting time-manager-0.0.0 Building time-manager-0.0.0 Completed utf8-string-1.0.1.1 Starting cookie-0.4.4 Building cookie-0.4.4 Completed time-manager-0.0.0 Starting unordered-containers-0.2.10.0 Building unordered-containers-0.2.10.0 Completed cookie-0.4.4 Starting psqueues-0.2.7.2 Completed time-compat-1.9.2.2 Starting case-insensitive-1.2.1.0 Building psqueues-0.2.7.2 Building case-insensitive-1.2.1.0 Completed zlib-0.6.2 Starting async-2.2.2 Building async-2.2.2 Completed case-insensitive-1.2.1.0 Starting ansi-terminal-0.9.1 Building ansi-terminal-0.9.1 Completed async-2.2.2 Starting old-time-1.1.0.3 Building old-time-1.1.0.3 Completed psqueues-0.2.7.2 Starting ditto-0.2 Building ditto-0.2 Completed ansi-terminal-0.9.1 Starting uuid-types-1.0.3 Building uuid-types-1.0.3 Completed unordered-containers-0.2.10.0 Starting simple-sendfile-0.2.28 Building simple-sendfile-0.2.28 Completed old-time-1.1.0.3 Starting iproute-1.7.7 Building iproute-1.7.7 Completed simple-sendfile-0.2.28 Starting mmorph-1.1.3 Completed uuid-types-1.0.3 Starting exceptions-0.10.2 Building mmorph-1.1.3 Completed ditto-0.2 Starting vector-0.12.0.3 Building exceptions-0.10.2 Building vector-0.12.0.3 Completed mmorph-1.1.3 Starting scientific-0.3.6.2 Building scientific-0.3.6.2 Completed iproute-1.7.7 Starting http-types-0.12.3 Building http-types-0.12.3 Completed exceptions-0.10.2 Starting http-media-0.7.1.3 Building http-media-0.7.1.3 Completed scientific-0.3.6.2 Starting streaming-commons-0.2.1.1 Completed http-types-0.12.3 Starting vault-0.3.1.3 Completed http-media-0.7.1.3 Starting unix-time-0.4.7 Building streaming-commons-0.2.1.1 Building vault-0.3.1.3 Building unix-time-0.4.7 Completed vault-0.3.1.3 Starting lucid-2.9.11 Building lucid-2.9.11 Completed unix-time-0.4.7 Starting resourcet-1.2.2 Building resourcet-1.2.2 Completed lucid-2.9.11 Starting attoparsec-0.13.2.2 Completed streaming-commons-0.2.1.1 Starting http2-2.0.3 Building attoparsec-0.13.2.2 Building http2-2.0.3 Completed resourcet-1.2.2 Starting wai-3.2.2.1 Building wai-3.2.2.1 Completed wai-3.2.2.1 Starting fast-logger-2.4.16 Building fast-logger-2.4.16 Completed fast-logger-2.4.16 Starting ditto-lucid-0.2 Building ditto-lucid-0.2 Completed attoparsec-0.13.2.2 Starting wai-logger-2.3.5 Completed ditto-lucid-0.2 Starting http-date-0.0.8 Building wai-logger-2.3.5 Building http-date-0.0.8 Completed wai-logger-2.3.5 Starting attoparsec-iso8601-1.0.1.0 Completed http-date-0.0.8 Building attoparsec-iso8601-1.0.1.0 Completed vector-0.12.0.3 Starting aeson-1.4.4.0 Building aeson-1.4.4.0 Completed http2-2.0.3 Starting warp-3.3.0 Completed attoparsec-iso8601-1.0.1.0 Starting http-api-data-0.4.1 Building warp-3.3.0 Building http-api-data-0.4.1 Completed http-api-data-0.4.1 Completed warp-3.3.0 Completed aeson-1.4.4.0 Starting quantification-0.5.0 Starting wai-extra-3.0.27 Building quantification-0.5.0 Building wai-extra-3.0.27 Completed quantification-0.5.0 Starting trasa-0.4.1 Building trasa-0.4.1 Completed wai-extra-3.0.27 Completed trasa-0.4.1 Starting trasa-server-0.5.4 Building trasa-server-0.5.4 Completed trasa-server-0.5.4 Starting trasa-extra-0.1.0.0 Building trasa-extra-0.1.0.0 Completed trasa-extra-0.1.0.0 Starting trasa-form-0.2.0.0 Building trasa-form-0.2.0.0 Failed to install trasa-form-0.2.0.0 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/trasa-form-0.2.0.0-GyZP1WHoNFv2wGva7gGFl4.log ): cabal: Entering directory '/tmp/cabal-tmp-30441/trasa-form-0.2.0.0' Configuring trasa-form-0.2.0.0... Preprocessing library for trasa-form-0.2.0.0.. Building library for trasa-form-0.2.0.0.. [1 of 2] Compiling Trasa.Form ( src/Trasa/Form.hs, dist/build/Trasa/Form.o ) [2 of 2] Compiling Trasa.Form.Lucid ( src/Trasa/Form/Lucid.hs, dist/build/Trasa/Form/Lucid.o ) Preprocessing executable 'test-server' for trasa-form-0.2.0.0.. Building executable 'test-server' for trasa-form-0.2.0.0.. [1 of 1] Compiling Main ( app/Main.hs, dist/build/test-server/test-server-tmp/Main.o ) app/Main.hs:149:3: error: • No instance for (Monad (Form (TrasaT IO) Text Text (Html ()))) arising from a do statement • In a stmt of a 'do' block: label "Int Field 1" "int1" In the expression: do label "Int Field 1" "int1" int1 <- inputInt readInt "int1" 0 label "Bool Field 1" "bool1" bool1 <- inputYesNo "bool1" .... In an equation for ‘formFoo’: formFoo = do label "Int Field 1" "int1" int1 <- inputInt readInt "int1" 0 label "Bool Field 1" "bool1" .... | 149 | label "Int Field 1" "int1" | ^^^^^^^^^^^^^^^^^^^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-30441/trasa-form-0.2.0.0' cabal: Error: some packages failed to install: trasa-form-0.2.0.0-GyZP1WHoNFv2wGva7gGFl4 failed during the building phase. The exception was: ExitFailure 1