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 StateVar-1.1.1.1 Starting base-orphans-0.8 Starting base64-bytestring-1.0.0.2 Starting base-compat-0.10.5 Building StateVar-1.1.1.1 Building base-orphans-0.8 Building base64-bytestring-1.0.0.2 Building base-compat-0.10.5 Completed base-orphans-0.8 Starting basement-0.0.10 Completed StateVar-1.1.1.1 Starting blaze-builder-0.4.1.0 Building basement-0.0.10 Building blaze-builder-0.4.1.0 Completed base64-bytestring-1.0.0.2 Starting byteable-0.1.1 Building byteable-0.1.1 Completed byteable-0.1.1 Starting cabal-doctest-1.0.6 Building cabal-doctest-1.0.6 Completed blaze-builder-0.4.1.0 Starting cereal-0.5.8.0 Completed base-compat-0.10.5 Starting data-default-class-0.1.2.0 Building cereal-0.5.8.0 Building data-default-class-0.1.2.0 Completed cabal-doctest-1.0.6 Starting dlist-0.8.0.5 Building dlist-0.8.0.5 Completed data-default-class-0.1.2.0 Starting erf-2.0.0.0 Building erf-2.0.0.0 Completed erf-2.0.0.0 Starting hashable-1.2.7.0 Completed dlist-0.8.0.5 Starting hourglass-0.2.12 Building hashable-1.2.7.0 Building hourglass-0.2.12 Completed cereal-0.5.8.0 Starting integer-logarithms-1.0.2.2 Building integer-logarithms-1.0.2.2 Completed hashable-1.2.7.0 Starting mime-types-0.1.0.9 Building mime-types-0.1.0.9 Completed integer-logarithms-1.0.2.2 Starting network-2.8.0.0 Completed hourglass-0.2.12 Starting network-uri-2.6.1.0 Building network-2.8.0.0 Building network-uri-2.6.1.0 Completed mime-types-0.1.0.9 Starting primitive-0.6.4.0 Building primitive-0.6.4.0 Completed network-uri-2.6.1.0 Starting random-1.1 Building random-1.1 Completed random-1.1 Starting safe-0.3.17 Building safe-0.3.17 Completed network-2.8.0.0 Starting semigroups-0.18.5 Building semigroups-0.18.5 Completed semigroups-0.18.5 Starting singleton-bool-0.1.4 Building singleton-bool-0.1.4 Completed safe-0.3.17 Starting string-conv-0.1.2 Completed singleton-bool-0.1.4 Starting tagged-0.8.6 Building string-conv-0.1.2 Building tagged-0.8.6 Completed string-conv-0.1.2 Starting th-abstraction-0.2.11.0 Building th-abstraction-0.2.11.0 Completed primitive-0.6.4.0 Starting time-locale-compat-0.1.1.5 Completed tagged-0.8.6 Starting transformers-compat-0.6.2 Building time-locale-compat-0.1.1.5 Building transformers-compat-0.6.2 Completed time-locale-compat-0.1.1.5 Starting utf8-string-1.0.1.1 Building utf8-string-1.0.1.1 Completed th-abstraction-0.2.11.0 Starting void-0.7.2 Building void-0.7.2 Completed transformers-compat-0.6.2 Starting zlib-0.6.2 Building zlib-0.6.2 Completed void-0.7.2 Starting contravariant-1.5 Building contravariant-1.5 Completed basement-0.0.10 Starting cookie-0.4.4 Completed utf8-string-1.0.1.1 Starting unordered-containers-0.2.10.0 Building cookie-0.4.4 Building unordered-containers-0.2.10.0 Completed contravariant-1.5 Starting case-insensitive-1.2.0.11 Completed cookie-0.4.4 Starting async-2.2.1 Building case-insensitive-1.2.0.11 Building async-2.2.1 Completed zlib-0.6.2 Starting uuid-types-1.0.3 Building uuid-types-1.0.3 Completed case-insensitive-1.2.0.11 Starting socks-0.5.6 Building socks-0.5.6 Completed async-2.2.1 Starting vector-0.12.0.2 Building vector-0.12.0.2 Completed uuid-types-1.0.3 Starting tf-random-0.5 Building tf-random-0.5 Completed socks-0.5.6 Starting scientific-0.3.6.2 Building scientific-0.3.6.2 Completed unordered-containers-0.2.10.0 Starting distributive-0.6 Completed tf-random-0.5 Starting transformers-base-0.4.5.2 Building transformers-base-0.4.5.2 Building distributive-0.6 Completed scientific-0.3.6.2 Starting mmorph-1.1.2 Completed transformers-base-0.4.5.2 Starting exceptions-0.10.0 Building mmorph-1.1.2 Building exceptions-0.10.0 Completed distributive-0.6 Starting memory-0.14.18 Building memory-0.14.18 Completed mmorph-1.1.2 Starting string-conversions-0.4.0.1 Building string-conversions-0.4.0.1 Completed exceptions-0.10.0 Starting http-types-0.12.3 Completed string-conversions-0.4.0.1 Starting http-media-0.7.1.3 Building http-types-0.12.3 Building http-media-0.7.1.3 Completed http-media-0.7.1.3 Starting streaming-commons-0.2.1.0 Completed http-types-0.12.3 Starting vault-0.3.1.2 Building streaming-commons-0.2.1.0 Building vault-0.3.1.2 Completed memory-0.14.18 Starting QuickCheck-2.12.6.1 Completed vault-0.3.1.2 Starting attoparsec-0.13.2.2 Building QuickCheck-2.12.6.1 Building attoparsec-0.13.2.2 Completed streaming-commons-0.2.1.0 Starting monad-control-1.0.2.3 Building monad-control-1.0.2.3 Completed monad-control-1.0.2.3 Starting comonad-5.0.4 Completed attoparsec-0.13.2.2 Starting pem-0.2.4 Building pem-0.2.4 Building comonad-5.0.4 Completed vector-0.12.0.2 Starting cryptonite-0.25 Building cryptonite-0.25 Completed pem-0.2.4 Starting asn1-types-0.3.2 Building asn1-types-0.3.2 Completed comonad-5.0.4 Starting http-client-0.6.2 Completed asn1-types-0.3.2 Starting attoparsec-iso8601-1.0.1.0 Building http-client-0.6.2 Building attoparsec-iso8601-1.0.1.0 Completed attoparsec-iso8601-1.0.1.0 Starting aeson-1.4.2.0 Building aeson-1.4.2.0 Completed QuickCheck-2.12.6.1 Starting bifunctors-5.5.3 Building bifunctors-5.5.3 Completed http-client-0.6.2 Starting asn1-encoding-0.9.5 Building asn1-encoding-0.9.5 Completed bifunctors-5.5.3 Starting http-api-data-0.4 Completed asn1-encoding-0.9.5 Starting semigroupoids-5.3.2 Building http-api-data-0.4 Building semigroupoids-5.3.2 Completed http-api-data-0.4 Starting profunctors-5.3 Building profunctors-5.3 Completed semigroupoids-5.3.2 Starting asn1-parse-0.9.4 Completed aeson-1.4.2.0 Starting servant-0.16 Building asn1-parse-0.9.4 Completed profunctors-5.3 Starting invariant-0.5.1 Completed asn1-parse-0.9.4 Starting free-5.1 Building invariant-0.5.1 Building servant-0.16 Building free-5.1 Completed invariant-0.5.1 Completed servant-0.16 Completed free-5.1 Starting servant-client-core-0.16 Starting adjunctions-4.4 Building servant-client-core-0.16 Building adjunctions-4.4 Completed cryptonite-0.25 Starting x509-1.7.5 Completed servant-client-core-0.16 Completed adjunctions-4.4 Starting kan-extensions-5.2 Building x509-1.7.5 Building kan-extensions-5.2 Completed kan-extensions-5.2 Starting servant-client-0.16 Completed x509-1.7.5 Starting x509-store-1.6.7 Building servant-client-0.16 Building x509-store-1.6.7 Completed x509-store-1.6.7 Starting x509-system-1.6.6 Starting x509-validation-1.6.11 Completed servant-client-0.16 Building x509-system-1.6.6 Building x509-validation-1.6.11 Completed x509-system-1.6.6 Completed x509-validation-1.6.11 Starting tls-1.4.1 Building tls-1.4.1 Completed tls-1.4.1 Starting connection-0.2.8 Building connection-0.2.8 Completed connection-0.2.8 Starting http-client-tls-0.3.5.3 Building http-client-tls-0.3.5.3 Completed http-client-tls-0.3.5.3 Starting mixpanel-client-0.2.0 Building mixpanel-client-0.2.0 Failed to install mixpanel-client-0.2.0 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/mixpanel-client-0.2.0-5wkEYdLh3dW6wVhtS6YwKQ.log ): cabal: Entering directory '/tmp/cabal-tmp-31855/mixpanel-client-0.2.0' Configuring mixpanel-client-0.2.0... Preprocessing library for mixpanel-client-0.2.0.. Building library for mixpanel-client-0.2.0.. [1 of 5] Compiling MixPanel.Types.Core ( src/MixPanel/Types/Core.hs, dist/build/MixPanel/Types/Core.o ) [2 of 5] Compiling MixPanel.Types.EngageData ( src/MixPanel/Types/EngageData.hs, dist/build/MixPanel/Types/EngageData.o ) [3 of 5] Compiling MixPanel.Types.TrackData ( src/MixPanel/Types/TrackData.hs, dist/build/MixPanel/Types/TrackData.o ) [4 of 5] Compiling MixPanel.API ( src/MixPanel/API.hs, dist/build/MixPanel/API.o ) [5 of 5] Compiling MixPanel ( src/MixPanel.hs, dist/build/MixPanel.o ) src/MixPanel.hs:42:18: error: Not in scope: type constructor or class ‘ServantError’ A data constructor of that name is in scope; did you mean DataKinds? | 42 | = ServantError ServantError | ^^^^^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-31855/mixpanel-client-0.2.0' cabal: Error: some packages failed to install: mixpanel-client-0.2.0-5wkEYdLh3dW6wVhtS6YwKQ failed during the building phase. The exception was: ExitFailure 1