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-noprelude-4.12.0.0 Starting base-orphans-0.8.1 Starting base-compat-0.10.5 Building StateVar-1.1.1.1 Building base-orphans-0.8.1 Building base-noprelude-4.12.0.0 Building base-compat-0.10.5 Completed base-noprelude-4.12.0.0 Starting base16-bytestring-0.1.1.6 Building base16-bytestring-0.1.1.6 Completed base-orphans-0.8.1 Starting base58-bytestring-0.1.0 Completed StateVar-1.1.1.1 Starting base64-bytestring-1.0.0.2 Building base58-bytestring-0.1.0 Building base64-bytestring-1.0.0.2 Completed base16-bytestring-0.1.1.6 Starting basement-0.0.10 Building basement-0.0.10 Completed base58-bytestring-0.1.0 Starting cabal-doctest-1.0.6 Building cabal-doctest-1.0.6 Completed base64-bytestring-1.0.0.2 Starting call-stack-0.1.0 Building call-stack-0.1.0 Completed base-compat-0.10.5 Starting clock-0.7.2 Completed call-stack-0.1.0 Starting cmdargs-0.10.20 Building clock-0.7.2 Completed cabal-doctest-1.0.6 Starting colour-2.3.4 Building cmdargs-0.10.20 Building colour-2.3.4 Completed clock-0.7.2 Starting data-default-class-0.1.2.0 Building data-default-class-0.1.2.0 Completed data-default-class-0.1.2.0 Starting dlist-0.8.0.6 Building dlist-0.8.0.6 Completed dlist-0.8.0.6 Starting hashable-1.2.7.0 Completed colour-2.3.4 Starting hspec-discover-2.7.1 Building hashable-1.2.7.0 Building hspec-discover-2.7.1 Completed hspec-discover-2.7.1 Starting integer-logarithms-1.0.2.2 Completed hashable-1.2.7.0 Starting microlens-0.4.10 Building integer-logarithms-1.0.2.2 Building microlens-0.4.10 Completed integer-logarithms-1.0.2.2 Starting named-0.3.0.0 Building named-0.3.0.0 Completed microlens-0.4.10 Starting old-locale-1.0.0.7 Completed named-0.3.0.0 Starting parallel-3.2.2.0 Building old-locale-1.0.0.7 Building parallel-3.2.2.0 Completed old-locale-1.0.0.7 Starting parser-combinators-1.0.1 Building parser-combinators-1.0.1 Completed parallel-3.2.2.0 Starting primes-0.2.1.0 Building primes-0.2.1.0 Completed cmdargs-0.10.20 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 primes-0.2.1.0 Starting reflection-2.1.4 Building reflection-2.1.4 Completed random-1.1 Starting safe-0.3.17 Building safe-0.3.17 Completed reflection-2.1.4 Starting semigroups-0.18.5 Building semigroups-0.18.5 Completed safe-0.3.17 Starting setenv-0.1.1.3 Completed semigroups-0.18.5 Starting syb-0.7 Building setenv-0.1.1.3 Building syb-0.7 Completed setenv-0.1.1.3 Starting tagged-0.8.6 Building tagged-0.8.6 Completed primitive-0.6.4.0 Starting th-abstraction-0.2.11.0 Completed syb-0.7 Starting time-locale-compat-0.1.1.5 Building th-abstraction-0.2.11.0 Building time-locale-compat-0.1.1.5 Completed tagged-0.8.6 Starting transformers-compat-0.6.3 Building transformers-compat-0.6.3 Completed basement-0.0.10 Starting utf8-string-1.0.1.1 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-6884/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-6884/transformers-compat-0.6.3' Starting vinyl-0.11.0 Completed time-locale-compat-0.1.1.5 Building utf8-string-1.0.1.1 Building vinyl-0.11.0 Completed th-abstraction-0.2.11.0 Completed utf8-string-1.0.1.1 Completed vinyl-0.11.0 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. comonad-5.0.4-1PGHt9eYrA4BrPWH2Q760 depends on comonad-5.0.4 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. 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. 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. morley-0.1.0.4-A9lFmPqUPUEtOzJDVu63O depends on morley-0.1.0.4 which failed to install. morley-prelude-0.1.0.3-KnGsnZZO7jC2IwrBFjLljN depends on morley-prelude-0.1.0.3 which failed to install. optparse-applicative-0.14.3.0-E8eXaX6v1AxCeJJ7IcjdR1 depends on optparse-applicative-0.14.3.0 which failed to install. profunctors-5.3-qXv5dUOfqq1f96GD3xAOm depends on profunctors-5.3 which failed to install. safe-exceptions-0.1.7.0-5X2pHxVHul87WzSCzjYNEs depends on safe-exceptions-0.1.7.0 which failed to install. semigroupoids-5.3.2-8Ihc6E5I5xqH8eYcekW9rO depends on semigroupoids-5.3.2 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 universum-1.5.0-6LvrADYD8ay385TJdcuucM depends on universum-1.5.0 which failed to install.