Resolving dependencies... Configuring multiset-0.3.4... Configuring old-locale-1.0.0.7... Building old-locale-1.0.0.7... Building multiset-0.3.4... Installed old-locale-1.0.0.7 Configuring parser-combinators-1.0.0... Building parser-combinators-1.0.0... Installed multiset-0.3.4 Configuring polyparse-1.12... Building polyparse-1.12... Installed parser-combinators-1.0.0 Configuring semigroups-0.18.4... Building semigroups-0.18.4... Installed semigroups-0.18.4 Configuring storable-complex-0.2.2... Building storable-complex-0.2.2... Installed storable-complex-0.2.2 Configuring old-time-1.1.0.3... Building old-time-1.1.0.3... Installed polyparse-1.12 Configuring megaparsec-6.5.0... Building megaparsec-6.5.0... Installed old-time-1.1.0.3 Configuring hmatrix-0.19.0.0... Building hmatrix-0.19.0.0... Installed megaparsec-6.5.0 Configuring cpphs-1.20.8... Building cpphs-1.20.8... Installed cpphs-1.20.8 Configuring haskell-src-exts-1.17.1... Building haskell-src-exts-1.17.1... Installed hmatrix-0.19.0.0 Installed haskell-src-exts-1.17.1 Configuring boltzmann-brain-1.3.1.3... Building boltzmann-brain-1.3.1.3... Failed to install boltzmann-brain-1.3.1.3 Build log ( /home/builder/.cabal/logs/ghc-8.2.2/boltzmann-brain-1.3.1.3-L2BYqcuSlgz9ei6aSgVrj3.log ): cabal: Entering directory '/tmp/cabal-tmp-22696/boltzmann-brain-1.3.1.3' Configuring boltzmann-brain-1.3.1.3... Preprocessing library for boltzmann-brain-1.3.1.3.. Building library for boltzmann-brain-1.3.1.3.. [ 1 of 13] Compiling Data.Boltzmann.Internal.Annotations ( Data/Boltzmann/Internal/Annotations.hs, dist/build/Data/Boltzmann/Internal/Annotations.o ) [ 2 of 13] Compiling Data.Boltzmann.Internal.Parser ( Data/Boltzmann/Internal/Parser.hs, dist/build/Data/Boltzmann/Internal/Parser.o ) Data/Boltzmann/Internal/Parser.hs:32:1: error: Could not find module ‘Text.Megaparsec.String’ Perhaps you meant Text.Megaparsec.Stream (from megaparsec-6.5.0) Text.Megaparsec.State Text.Megaparsec.Error (from megaparsec-6.5.0) Use -v to see a list of the files searched for. | 32 | import Text.Megaparsec.String | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Data/Boltzmann/Internal/Parser.hs:33:1: error: Could not find module ‘Text.Megaparsec.Lexer’ Perhaps you meant Text.Megaparsec.Expr (from megaparsec-6.5.0) Text.Megaparsec.Byte (from megaparsec-6.5.0) Text.Megaparsec.Char (from megaparsec-6.5.0) Use -v to see a list of the files searched for. | 33 | import qualified Text.Megaparsec.Lexer as L | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-22696/boltzmann-brain-1.3.1.3' cabal: Error: some packages failed to install: boltzmann-brain-1.3.1.3-L2BYqcuSlgz9ei6aSgVrj3 failed during the building phase. The exception was: ExitFailure 1