Resolving dependencies... Starting StateVar-1.2.2 Starting cabal-doctest-1.0.9 Starting STMonadTrans-0.4.6 Starting base-orphans-0.8.6 Building StateVar-1.2.2 Building base-orphans-0.8.6 Building cabal-doctest-1.0.9 Building STMonadTrans-0.4.6 Completed StateVar-1.2.2 Starting call-stack-0.4.0 Building call-stack-0.4.0 Completed cabal-doctest-1.0.9 Starting clock-0.8.3 Building clock-0.8.3 Completed STMonadTrans-0.4.6 Starting cmdargs-0.10.21 Completed call-stack-0.4.0 Starting colour-2.3.6 Building cmdargs-0.10.21 Building colour-2.3.6 Completed clock-0.8.3 Starting containers-0.6.6 Completed base-orphans-0.8.6 Starting data-default-class-0.1.2.0 Building containers-0.6.6 Building data-default-class-0.1.2.0 Completed data-default-class-0.1.2.0 Starting fail-4.9.0.0 Building fail-4.9.0.0 Completed fail-4.9.0.0 Starting ilist-0.4.0.1 Building ilist-0.4.0.1 Completed colour-2.3.6 Starting primitive-0.7.4.0 Completed ilist-0.4.0.1 Starting raw-strings-qq-1.1 Building primitive-0.7.4.0 Building raw-strings-qq-1.1 Completed raw-strings-qq-1.1 Starting reflection-2.1.6 Building reflection-2.1.6 Completed reflection-2.1.6 Starting semigroups-0.20 Building semigroups-0.20 Completed semigroups-0.20 Starting tagged-0.8.6.1 Building tagged-0.8.6.1 Completed cmdargs-0.10.21 Starting transformers-compat-0.7.2 Building transformers-compat-0.7.2 Completed tagged-0.8.6.1 Starting void-0.7.3 Building void-0.7.3 Completed primitive-0.7.4.0 Starting contravariant-1.5.5 Completed void-0.7.3 Starting extra-1.7.10 Building contravariant-1.5.5 Building extra-1.7.10 Completed transformers-compat-0.7.2 Starting ansi-terminal-0.11.3 Building ansi-terminal-0.11.3 Completed contravariant-1.5.5 Starting distributive-0.6.2.1 Building distributive-0.6.2.1 Completed extra-1.7.10 Starting vector-0.12.3.1 Completed distributive-0.6.2.1 Starting transformers-base-0.4.6 Building vector-0.12.3.1 Building transformers-base-0.4.6 Completed ansi-terminal-0.11.3 Starting mmorph-1.2.0 Building mmorph-1.2.0 Completed transformers-base-0.4.6 Completed mmorph-1.2.0 Starting pipes-4.3.16 Building pipes-4.3.16 Completed pipes-4.3.16 Completed containers-0.6.6 Starting parallel-3.2.2.0 Starting th-abstraction-0.4.3.0 Starting indexed-traversable-0.1.2 Building parallel-3.2.2.0 Building indexed-traversable-0.1.2 Building th-abstraction-0.4.3.0 Completed parallel-3.2.2.0 Starting fgl-5.7.0.3 Building fgl-5.7.0.3 Completed indexed-traversable-0.1.2 Starting equivalence-0.3.5 Building equivalence-0.3.5 Completed th-abstraction-0.4.3.0 Starting binary-0.8.9.0 Building binary-0.8.9.0 Completed equivalence-0.3.5 Starting comonad-5.0.8 Building comonad-5.0.8 Completed binary-0.8.9.0 Starting text-1.2.5.0 Completed comonad-5.0.8 Starting bifunctors-5.5.12 Building text-1.2.5.0 Completed fgl-5.7.0.3 Building bifunctors-5.5.12 Completed vector-0.12.3.1 Completed bifunctors-5.5.12 Starting profunctors-5.6.2 Building profunctors-5.6.2 Completed text-1.2.5.0 Starting hashable-1.3.5.0 Starting parsec-3.1.15.1 Starting prettyprinter-1.7.1 Building hashable-1.3.5.0 Building parsec-3.1.15.1 Building prettyprinter-1.7.1 Completed profunctors-5.6.2 Completed hashable-1.3.5.0 Starting unordered-containers-0.2.19.1 Starting hashtables-1.2.4.2 Building unordered-containers-0.2.19.1 Building hashtables-1.2.4.2 Completed prettyprinter-1.7.1 Starting prettyprinter-ansi-terminal-1.1.3 Completed parsec-3.1.15.1 Starting language-dot-0.1.1 Building prettyprinter-ansi-terminal-1.1.3 Building language-dot-0.1.1 Completed prettyprinter-ansi-terminal-1.1.3 Starting pretty-simple-4.0.0.0 Building pretty-simple-4.0.0.0 Completed language-dot-0.1.1 Completed hashtables-1.2.4.2 Completed unordered-containers-0.2.19.1 Starting invariant-0.6 Starting intern-0.9.4 Starting semigroupoids-5.3.7 Building intern-0.9.4 Building invariant-0.6 Building semigroupoids-5.3.7 Completed pretty-simple-4.0.0.0 Completed intern-0.9.4 Completed invariant-0.6 Completed semigroupoids-5.3.7 Starting free-5.1.9 Building free-5.1.9 Completed free-5.1.9 Starting keys-3.12.3 Starting adjunctions-4.4.1 Building keys-3.12.3 Building adjunctions-4.4.1 Completed adjunctions-4.4.1 Starting kan-extensions-5.2.5 Building kan-extensions-5.2.5 Completed keys-3.12.3 Completed kan-extensions-5.2.5 Starting pointed-5.0.4 Starting lens-4.19.2 Building pointed-5.0.4 Building lens-4.19.2 Completed pointed-5.0.4 Starting vector-instances-3.4 Building vector-instances-3.4 Completed vector-instances-3.4 Completed lens-4.19.2 Starting ecta-1.0.0.0 Building ecta-1.0.0.0 Failed to install ecta-1.0.0.0 Build log ( /home/builder/.cabal/logs/ghc-8.10.2/ecta-1.0.0.0-7jtl6YyLHbkGJU0cULIcwW.log ): cabal: Entering directory '/tmp/cabal-tmp-32451/ecta-1.0.0.0' Configuring ecta-1.0.0.0... Preprocessing library for ecta-1.0.0.0.. Building library for ecta-1.0.0.0.. [ 1 of 26] Compiling Data.HashTable.Extended ( src/Data/HashTable/Extended.hs, dist/build/Data/HashTable/Extended.o, dist/build/Data/HashTable/Extended.dyn_o ) [ 2 of 26] Compiling Data.Interned.Extended.HashTableBased ( src/Data/Interned/Extended/HashTableBased.hs, dist/build/Data/Interned/Extended/HashTableBased.o, dist/build/Data/Interned/Extended/HashTableBased.dyn_o ) [ 3 of 26] Compiling Data.Interned.Extended.SingleThreaded ( src/Data/Interned/Extended/SingleThreaded.hs, dist/build/Data/Interned/Extended/SingleThreaded.o, dist/build/Data/Interned/Extended/SingleThreaded.dyn_o ) [ 4 of 26] Compiling Data.Persistent.UnionFind ( src/Data/Persistent/UnionFind.hs, dist/build/Data/Persistent/UnionFind.o, dist/build/Data/Persistent/UnionFind.dyn_o ) [ 5 of 26] Compiling Data.Text.Extended.Pretty ( src/Data/Text/Extended/Pretty.hs, dist/build/Data/Text/Extended/Pretty.o, dist/build/Data/Text/Extended/Pretty.dyn_o ) [ 6 of 26] Compiling Data.Memoization.Metrics ( src/Data/Memoization/Metrics.hs, dist/build/Data/Memoization/Metrics.o, dist/build/Data/Memoization/Metrics.dyn_o ) [ 7 of 26] Compiling Data.Memoization ( src/Data/Memoization.hs, dist/build/Data/Memoization.o, dist/build/Data/Memoization.dyn_o ) [ 8 of 26] Compiling Paths_ecta ( dist/build/autogen/Paths_ecta.hs, dist/build/Paths_ecta.o, dist/build/Paths_ecta.dyn_o ) [ 9 of 26] Compiling Utility.Fixpoint ( src/Utility/Fixpoint.hs, dist/build/Utility/Fixpoint.o, dist/build/Utility/Fixpoint.dyn_o ) [10 of 26] Compiling Data.ECTA.Internal.Paths ( src/Data/ECTA/Internal/Paths.hs, dist/build/Data/ECTA/Internal/Paths.o, dist/build/Data/ECTA/Internal/Paths.dyn_o ) src/Data/ECTA/Internal/Paths.hs:61:58: error: Module Data.Equivalence.Monad does not export classes | 61 | import Data.Equivalence.Monad ( runEquivM, equate, desc, classes ) | ^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-32451/ecta-1.0.0.0' cabal: Error: some packages failed to install: ecta-1.0.0.0-7jtl6YyLHbkGJU0cULIcwW failed during the building phase. The exception was: ExitFailure 1