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-1.2 Starting base-orphans-0.8.1 Starting c2hs-extra-0.1.0.1 Starting base-compat-0.10.5 Building c2hs-extra-0.1.0.1 Building StateVar-1.2 Building base-orphans-0.8.1 Building base-compat-0.10.5 Completed c2hs-extra-0.1.0.1 Starting cabal-doctest-1.0.7 Completed base-orphans-0.8.1 Starting call-stack-0.2.0 Completed StateVar-1.2 Starting colour-2.3.5 Building cabal-doctest-1.0.7 Building call-stack-0.2.0 Building colour-2.3.5 Completed call-stack-0.2.0 Starting conduit-combinators-1.3.0 Building conduit-combinators-1.3.0 Completed cabal-doctest-1.0.7 Starting dlist-0.8.0.7 Completed conduit-combinators-1.3.0 Starting fgl-5.7.0.1 Building dlist-0.8.0.7 Building fgl-5.7.0.1 Completed base-compat-0.10.5 Starting hashable-1.3.0.0 Building hashable-1.3.0.0 Completed dlist-0.8.0.7 Starting haskell-src-exts-1.21.1 Building haskell-src-exts-1.21.1 Completed colour-2.3.5 Starting integer-logarithms-1.0.3 Building integer-logarithms-1.0.3 Completed hashable-1.3.0.0 Starting network-3.0.1.1 Completed integer-logarithms-1.0.3 Starting old-locale-1.0.0.7 Building old-locale-1.0.0.7 Completed old-locale-1.0.0.7 Starting parallel-3.2.2.0 Building parallel-3.2.2.0 Building network-3.0.1.1 Completed fgl-5.7.0.1 Starting polyparse-1.12.1 Building polyparse-1.12.1 Completed parallel-3.2.2.0 Starting primitive-0.7.0.0 Building primitive-0.7.0.0 Completed network-3.0.1.1 Starting random-1.1 Building random-1.1 Completed polyparse-1.12.1 Starting reflection-2.1.5 Building reflection-2.1.5 Completed random-1.1 Starting semigroups-0.19.1 Building semigroups-0.19.1 Completed semigroups-0.19.1 Starting split-0.2.3.3 Building split-0.2.3.3 Completed primitive-0.7.0.0 Starting tagged-0.8.6 Building tagged-0.8.6 Completed reflection-2.1.5 Starting th-abstraction-0.3.1.0 Building th-abstraction-0.3.1.0 Completed split-0.2.3.3 Starting transformers-compat-0.6.5 Building transformers-compat-0.6.5 Completed tagged-0.8.6 Starting type-combinators-0.2.4.3 Building type-combinators-0.2.4.3 Completed transformers-compat-0.6.5 Starting type-equality-1 Building type-equality-1 Completed th-abstraction-0.3.1.0 Starting unliftio-core-0.1.2.0 Failed to install type-combinators-0.2.4.3 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/type-combinators-0.2.4.3-5vNMFCYBj1Q3v5oDQ6r4Jj.log ): cabal: Entering directory '/tmp/cabal-tmp-4629/type-combinators-0.2.4.3' Configuring type-combinators-0.2.4.3... Preprocessing library for type-combinators-0.2.4.3.. Building library for type-combinators-0.2.4.3.. [ 1 of 32] Compiling Type.Family.Constraint ( src/Type/Family/Constraint.hs, dist/build/Type/Family/Constraint.o ) [ 2 of 32] Compiling Type.Class.Known ( src/Type/Class/Known.hs, dist/build/Type/Class/Known.o ) [ 3 of 32] Compiling Type.Class.Witness ( src/Type/Class/Witness.hs, dist/build/Type/Class/Witness.o ) [ 4 of 32] Compiling Type.Family.Bool ( src/Type/Family/Bool.hs, dist/build/Type/Family/Bool.o ) [ 5 of 32] Compiling Type.Class.Higher ( src/Type/Class/Higher.hs, dist/build/Type/Class/Higher.o ) [ 6 of 32] Compiling Data.Type.Boolean ( src/Data/Type/Boolean.hs, dist/build/Data/Type/Boolean.o ) [ 7 of 32] Compiling Type.Family.Monoid ( src/Type/Family/Monoid.hs, dist/build/Type/Family/Monoid.o ) [ 8 of 32] Compiling Type.Family.Maybe ( src/Type/Family/Maybe.hs, dist/build/Type/Family/Maybe.o ) [ 9 of 32] Compiling Data.Type.Option ( src/Data/Type/Option.hs, dist/build/Data/Type/Option.o ) [10 of 32] Compiling Type.Family.Either ( src/Type/Family/Either.hs, dist/build/Type/Family/Either.o ) [11 of 32] Compiling Data.Type.Disjunction ( src/Data/Type/Disjunction.hs, dist/build/Data/Type/Disjunction.o ) [12 of 32] Compiling Type.Family.Tuple ( src/Type/Family/Tuple.hs, dist/build/Type/Family/Tuple.o ) [13 of 32] Compiling Type.Family.List ( src/Type/Family/List.hs, dist/build/Type/Family/List.o ) [14 of 32] Compiling Type.Family.Nat ( src/Type/Family/Nat.hs, dist/build/Type/Family/Nat.o ) src/Type/Family/Nat.hs:95:13: error: Malformed head of type or class declaration: (x :: N) * (y :: N) | 95 | type family (x :: N) * (y :: N) :: N where | ^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-4629/type-combinators-0.2.4.3' Starting void-0.7.3 Building unliftio-core-0.1.2.0 Completed type-equality-1 Building void-0.7.3 Completed unliftio-core-0.1.2.0 Completed void-0.7.3 Completed haskell-src-exts-1.21.1 cabal: Error: some packages failed to install: fei-base-0.2.0.0-Ig16SjdfxQQB6rTXuagxiu depends on fei-base-0.2.0.0 which failed to install. fei-dataiter-0.2.0.0-AWMuLtt0pfw2lewJDkLpZS depends on fei-dataiter-0.2.0.0 which failed to install. fei-nn-0.2.0-LgeRupId1hG0NP9kOU5a1 depends on fei-nn-0.2.0 which failed to install. tuple-ops-0.0.0.3-C1exc8FSLZHG2KY3jDyTct depends on tuple-ops-0.0.0.3 which failed to install. type-combinators-0.2.4.3-5vNMFCYBj1Q3v5oDQ6r4Jj failed during the building phase. The exception was: ExitFailure 1