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-0.8.1 Starting basement-0.0.10 Starting base-compat-0.10.5 Building StateVar-1.1.1.1 Building base-orphans-0.8.1 Building basement-0.0.10 Building base-compat-0.10.5 Completed base-orphans-0.8.1 Starting blaze-builder-0.4.1.0 Completed StateVar-1.1.1.1 Starting byteable-0.1.1 Building blaze-builder-0.4.1.0 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 call-stack-0.1.0 Building call-stack-0.1.0 Completed base-compat-0.10.5 Starting cereal-0.5.8.0 Building cereal-0.5.8.0 Completed cabal-doctest-1.0.6 Starting data-default-class-0.1.2.0 Completed call-stack-0.1.0 Starting dlist-0.8.0.6 Building data-default-class-0.1.2.0 Building dlist-0.8.0.6 Completed data-default-class-0.1.2.0 Starting erf-2.0.0.0 Building erf-2.0.0.0 Completed dlist-0.8.0.6 Starting file-embed-0.0.11 Building file-embed-0.0.11 Completed erf-2.0.0.0 Starting hashable-1.2.7.0 Building hashable-1.2.7.0 Completed file-embed-0.0.11 Starting hourglass-0.2.12 Completed cereal-0.5.8.0 Starting integer-logarithms-1.0.2.2 Building hourglass-0.2.12 Building integer-logarithms-1.0.2.2 Completed hashable-1.2.7.0 Starting microlens-0.4.10 Building microlens-0.4.10 Completed integer-logarithms-1.0.2.2 Starting mime-types-0.1.0.9 Building mime-types-0.1.0.9 Completed microlens-0.4.10 Starting network-2.8.0.0 Completed hourglass-0.2.12 Starting network-uri-2.6.1.0 Building network-uri-2.6.1.0 Building network-2.8.0.0 Completed mime-types-0.1.0.9 Starting parallel-3.2.2.0 Building parallel-3.2.2.0 Completed network-uri-2.6.1.0 Starting parser-combinators-1.0.1 Building parser-combinators-1.0.1 Completed parallel-3.2.2.0 Starting primitive-0.6.4.0 Building primitive-0.6.4.0 Completed parser-combinators-1.0.1 Starting random-1.1 Building random-1.1 Completed network-2.8.0.0 Starting reflection-2.1.4 Building reflection-2.1.4 Completed random-1.1 Starting say-0.1.0.1 Building say-0.1.0.1 Completed say-0.1.0.1 Starting semigroups-0.18.5 Building semigroups-0.18.5 Completed semigroups-0.18.5 Starting split-0.2.3.3 Building split-0.2.3.3 Completed reflection-2.1.4 Starting stm-chans-3.0.0.4 Completed basement-0.0.10 Starting stm-delay-0.1.1.1 Completed split-0.2.3.3 Starting tagged-0.8.6 Building stm-delay-0.1.1.1 Completed primitive-0.6.4.0 Starting th-abstraction-0.2.11.0 Building tagged-0.8.6 Building th-abstraction-0.2.11.0 Building stm-chans-3.0.0.4 Completed stm-delay-0.1.1.1 Starting time-locale-compat-0.1.1.5 Building time-locale-compat-0.1.1.5 Completed tagged-0.8.6 Starting transformers-compat-0.6.3 Completed time-locale-compat-0.1.1.5 Starting unliftio-core-0.1.2.0 Building transformers-compat-0.6.3 Completed stm-chans-3.0.0.4 Starting utf8-string-1.0.1.1 Building unliftio-core-0.1.2.0 Failed to install transformers-compat-0.6.3 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/transformers-compat-0.6.3-8J5sQDqjcykKMT9EWJuWmO.log ): cabal: Entering directory '/tmp/cabal-tmp-24279/transformers-compat-0.6.3' Configuring transformers-compat-0.6.3... Preprocessing library for transformers-compat-0.6.3.. Building library for transformers-compat-0.6.3.. [1 of 4] Compiling Control.Monad.Trans.Instances ( src/Control/Monad/Trans/Instances.hs, dist/build/Control/Monad/Trans/Instances.o ) src/Control/Monad/Trans/Instances.hs:610:10: error: Duplicate instance declarations: instance MonadFix m => MonadFix (ListT m) -- Defined at src/Control/Monad/Trans/Instances.hs:610:10 instance [safe] MonadFix m => MonadFix (ListT m) -- Defined in ‘Control.Monad.Trans.List’ | 610 | instance (MonadFix m) => MonadFix (ListT m) where | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-24279/transformers-compat-0.6.3' Starting void-0.7.2 Building utf8-string-1.0.1.1 Building void-0.7.2 Completed th-abstraction-0.2.11.0 Completed unliftio-core-0.1.2.0 Completed void-0.7.2 Completed utf8-string-1.0.1.1 cabal: Error: some packages failed to install: adjunctions-4.4-6rIsiWE8kPfDWVrMJBk2NV depends on adjunctions-4.4 which failed to install. bifunctors-5.5.3-7ypOJJuRiyTIXXC5seKRKh depends on bifunctors-5.5.3 which failed to install. brick-0.47-AvqKr8QiBXkAcZ71tzFInt depends on brick-0.47 which failed to install. classy-prelude-1.5.0-3ibUpnpZr3vFyUVokSNSfS depends on classy-prelude-1.5.0 which failed to install. comonad-5.0.4-1PGHt9eYrA4BrPWH2Q760 depends on comonad-5.0.4 which failed to install. conduit-1.3.1.1-BqJ4MznSKgh5HEnNxzQPxI depends on conduit-1.3.1.1 which failed to install. conduit-extra-1.3.1.1-2k9Io3odjktLYq1QQcyaly depends on conduit-extra-1.3.1.1 which failed to install. exceptions-0.10.1-LJQK6tPYLpA2GwdrZBxobP depends on exceptions-0.10.1 which failed to install. free-5.1-8MYGFPJMLDiJWGdGHtY1Yr depends on free-5.1 which failed to install. http-client-0.5.14-4EaI7AJmGU02qR18InxYbj depends on http-client-0.5.14 which failed to install. http-client-tls-0.3.5.3-PixoLlAE944f90phP6jLs depends on http-client-tls-0.3.5.3 which failed to install. http-conduit-2.3.6.1-34ESzsMF6BKFJk5lnvgTsB depends on http-conduit-2.3.6.1 which failed to install. invariant-0.5.1-CMQOtbM31qhAXyTA28AUKR depends on invariant-0.5.1 which failed to install. kan-extensions-5.2-F6jGBnlZ9ZZ6ZmOBLugUoK depends on kan-extensions-5.2 which failed to install. keys-3.12.1-454NSUmKp719d3Vsc8nQTH depends on keys-3.12.1 which failed to install. lens-4.17-IEsks0FDkfnFTCwXbnyzD2 depends on lens-4.17 which failed to install. microlens-mtl-0.1.11.1-22GDhxNgNFV6qkyE3pGfTN depends on microlens-mtl-0.1.11.1 which failed to install. mono-traversable-instances-0.1.0.0-HhEl6ieyj1l8wqkRoB7DsS depends on mono-traversable-instances-0.1.0.0 which failed to install. pointed-5.0.1-6rBjeXYrrAs5wUnurO3rf1 depends on pointed-5.0.1 which failed to install. profunctors-5.3-qXv5dUOfqq1f96GD3xAOm depends on profunctors-5.3 which failed to install. resourcet-1.2.2-6SDTFhVwwqh77JL7liyTkt depends on resourcet-1.2.2 which failed to install. semigroupoids-5.3.2-8Ihc6E5I5xqH8eYcekW9rO depends on semigroupoids-5.3.2 which failed to install. taskell-1.4.0.0-Hqeldl9XwX4EcLG6b9Elbe depends on taskell-1.4.0.0 which failed to install. transformers-base-0.4.5.2-GlJ8ZErq7lWLBZaohbo02f depends on transformers-base-0.4.5.2 which failed to install. transformers-compat-0.6.3-8J5sQDqjcykKMT9EWJuWmO failed during the building phase. The exception was: ExitFailure 1 vector-instances-3.4-5uVGPCVFudRGVsZloNLir0 depends on vector-instances-3.4 which failed to install. vty-5.25.1-9YydVXQagt3CVjZgPUdV3X depends on vty-5.25.1 which failed to install.