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... Warning: The following packages are likely to be broken by the reinstalls: parsec-3.1.13.0 Cabal-2.4.0.1 Continuing even though the plan contains dangerous reinstalls. Starting colour-2.3.5 Starting dlist-0.8.0.7 Starting base-orphans-0.8.1 Starting base-compat-0.10.5 Building colour-2.3.5 Building base-orphans-0.8.1 Building dlist-0.8.0.7 Building base-compat-0.10.5 Completed base-orphans-0.8.1 Starting hashable-1.3.0.0 Building hashable-1.3.0.0 Completed dlist-0.8.0.7 Starting haskell-src-exts-1.22.0 Building haskell-src-exts-1.22.0 Completed hashable-1.3.0.0 Starting integer-logarithms-1.0.3 Building integer-logarithms-1.0.3 Completed base-compat-0.10.5 Starting multiset-0.3.4.1 Building multiset-0.3.4.1 Completed colour-2.3.5 Starting parser-combinators-1.2.1 Building parser-combinators-1.2.1 Completed integer-logarithms-1.0.3 Starting polyparse-1.12.1 Building polyparse-1.12.1 Completed multiset-0.3.4.1 Starting pretty-terminal-0.1.0.0 Completed parser-combinators-1.2.1 Starting process-1.6.7.0 Building pretty-terminal-0.1.0.0 Building process-1.6.7.0 Completed pretty-terminal-0.1.0.0 Starting random-1.1 Building random-1.1 Completed process-1.6.7.0 Starting semigroups-0.19.1 Building semigroups-0.19.1 Completed polyparse-1.12.1 Starting split-0.2.3.3 Completed random-1.1 Starting th-abstraction-0.3.1.0 Building split-0.2.3.3 Building th-abstraction-0.3.1.0 Completed semigroups-0.19.1 Starting transformers-0.5.6.2 Building transformers-0.5.6.2 Completed split-0.2.3.3 Starting time-compat-1.9.2.2 Building time-compat-1.9.2.2 Completed th-abstraction-0.3.1.0 Starting storable-complex-0.2.3.0 Building storable-complex-0.2.3.0 Completed storable-complex-0.2.3.0 Starting unordered-containers-0.2.10.0 Completed time-compat-1.9.2.2 Starting case-insensitive-1.2.1.0 Building unordered-containers-0.2.10.0 Building case-insensitive-1.2.1.0 Completed case-insensitive-1.2.1.0 Starting wl-pprint-text-1.2.0.0 Building wl-pprint-text-1.2.0.0 Completed wl-pprint-text-1.2.0.0 Starting uuid-types-1.0.3 Completed transformers-0.5.6.2 Starting edit-distance-0.2.2.1 Building uuid-types-1.0.3 Building edit-distance-0.2.2.1 Completed unordered-containers-0.2.10.0 Starting transformers-compat-0.6.5 Completed uuid-types-1.0.3 Starting tagged-0.8.6 Building transformers-compat-0.6.5 Completed edit-distance-0.2.2.1 Starting primitive-0.7.0.0 Building tagged-0.8.6 Building primitive-0.7.0.0 Completed transformers-compat-0.6.5 Starting mtl-2.2.2 Completed tagged-0.8.6 Starting fgl-5.7.0.1 Building mtl-2.2.2 Building fgl-5.7.0.1 Completed mtl-2.2.2 Starting exceptions-0.10.3 Building exceptions-0.10.3 Completed exceptions-0.10.3 Starting temporary-1.3 Building temporary-1.3 Completed primitive-0.7.0.0 Starting vector-0.12.0.3 Building vector-0.12.0.3 Completed fgl-5.7.0.1 Starting scientific-0.3.6.2 Building scientific-0.3.6.2 Completed temporary-1.3 Starting MonadRandom-0.5.1.1 Building MonadRandom-0.5.1.1 Completed scientific-0.3.6.2 Starting graphviz-2999.20.0.3 Building graphviz-2999.20.0.3 Completed MonadRandom-0.5.1.1 Starting megaparsec-8.0.0 Building megaparsec-8.0.0 Completed megaparsec-8.0.0 Starting attoparsec-0.13.2.3 Building attoparsec-0.13.2.3 Completed attoparsec-0.13.2.3 Completed vector-0.12.0.3 Starting hmatrix-0.20.0.0 Starting aeson-1.4.6.0 Building hmatrix-0.20.0.0 Building aeson-1.4.6.0 Completed graphviz-2999.20.0.3 Completed aeson-1.4.6.0 Completed haskell-src-exts-1.22.0 Completed hmatrix-0.20.0.0 Downloading boltzmann-brain-1.6 Downloaded boltzmann-brain-1.6 Starting boltzmann-brain-1.6 Building boltzmann-brain-1.6 Failed to install boltzmann-brain-1.6 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/boltzmann-brain-1.6-CmQq92IPjhUElXyvQI2no2.log ): cabal: Entering directory '/tmp/cabal-tmp-2052/boltzmann-brain-1.6' Configuring boltzmann-brain-1.6... Preprocessing library for boltzmann-brain-1.6.. Building library for boltzmann-brain-1.6.. [ 1 of 23] Compiling Data.Boltzmann.Internal.Annotations ( Data/Boltzmann/Internal/Annotations.hs, dist/build/Data/Boltzmann/Internal/Annotations.o ) [ 2 of 23] Compiling Data.Boltzmann.Internal.Parser ( Data/Boltzmann/Internal/Parser.hs, dist/build/Data/Boltzmann/Internal/Parser.o ) [ 3 of 23] Compiling Data.Boltzmann.Internal.Utils ( Data/Boltzmann/Internal/Utils.hs, dist/build/Data/Boltzmann/Internal/Utils.o ) [ 4 of 23] Compiling Data.Boltzmann.Internal.TH ( Data/Boltzmann/Internal/TH.hs, dist/build/Data/Boltzmann/Internal/TH.o ) [ 5 of 23] Compiling Data.Boltzmann.Internal.Logging ( Data/Boltzmann/Internal/Logging.hs, dist/build/Data/Boltzmann/Internal/Logging.o ) [ 6 of 23] Compiling Data.Boltzmann.System.Annotations ( Data/Boltzmann/System/Annotations.hs, dist/build/Data/Boltzmann/System/Annotations.o ) [ 7 of 23] Compiling Data.Boltzmann.System ( Data/Boltzmann/System.hs, dist/build/Data/Boltzmann/System.o ) [ 8 of 23] Compiling Data.Boltzmann.Internal.Tuner ( Data/Boltzmann/Internal/Tuner.hs, dist/build/Data/Boltzmann/Internal/Tuner.o ) [ 9 of 23] Compiling Data.Boltzmann.Compiler.Haskell.Helpers ( Data/Boltzmann/Compiler/Haskell/Helpers.hs, dist/build/Data/Boltzmann/Compiler/Haskell/Helpers.o ) [10 of 23] Compiling Data.Boltzmann.Compiler ( Data/Boltzmann/Compiler.hs, dist/build/Data/Boltzmann/Compiler.o ) [11 of 23] Compiling Data.Boltzmann.Compiler.Haskell.Rational ( Data/Boltzmann/Compiler/Haskell/Rational.hs, dist/build/Data/Boltzmann/Compiler/Haskell/Rational.o ) Data/Boltzmann/Compiler/Haskell/Rational.hs:233:59: error: Data constructor not in scope: ClassA :: () -> QName () -> [Type ()] -> Asst () | 233 | where type' = TyForall () Nothing (Just $ CxTuple () [ClassA () randomGen' [g']]) | ^^^^^^ Data/Boltzmann/Compiler/Haskell/Rational.hs:277:59: error: Data constructor not in scope: ClassA :: () -> QName () -> [Type ()] -> Asst () | 277 | where type' = TyForall () Nothing (Just $ CxTuple () [ClassA () randomGen' [g']]) | ^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-2052/boltzmann-brain-1.6' cabal: Error: some packages failed to install: boltzmann-brain-1.6-CmQq92IPjhUElXyvQI2no2 failed during the building phase. The exception was: ExitFailure 1