Resolving dependencies... Starting StateVar-1.2 Starting cabal-doctest-1.0.8 Starting base-orphans-0.8.2 Starting colour-2.3.5 Building StateVar-1.2 Building base-orphans-0.8.2 Building cabal-doctest-1.0.8 Building colour-2.3.5 Completed StateVar-1.2 Starting exceptions-0.10.4 Building exceptions-0.10.4 Completed cabal-doctest-1.0.8 Starting filepath-bytestring-1.4.2.1.6 Building filepath-bytestring-1.4.2.1.6 Completed base-orphans-0.8.2 Starting hashable-1.3.0.0 Building hashable-1.3.0.0 Completed filepath-bytestring-1.4.2.1.6 Starting integer-logarithms-1.0.3 Completed exceptions-0.10.4 Starting lukko-0.1.1.2 Completed colour-2.3.5 Starting primitive-0.7.1.0 Building integer-logarithms-1.0.3 Building lukko-0.1.1.2 Building primitive-0.7.1.0 Completed hashable-1.3.0.0 Starting stringsearch-0.3.6.6 Completed integer-logarithms-1.0.3 Starting tagged-0.8.6 Building stringsearch-0.3.6.6 Building tagged-0.8.6 Completed lukko-0.1.1.2 Starting th-abstraction-0.3.2.0 Building th-abstraction-0.3.2.0 Completed tagged-0.8.6 Starting transformers-compat-0.6.5 Building transformers-compat-0.6.5 Completed th-abstraction-0.3.2.0 Starting void-0.7.3 Completed stringsearch-0.3.6.6 Starting contravariant-1.5.2 Building void-0.7.3 Building contravariant-1.5.2 Completed transformers-compat-0.6.5 Starting ansi-terminal-0.10.3 Completed void-0.7.3 Starting unordered-containers-0.2.12.0 Building ansi-terminal-0.10.3 Building unordered-containers-0.2.12.0 Completed contravariant-1.5.2 Starting distributive-0.6.2 Completed ansi-terminal-0.10.3 Starting transformers-base-0.4.5.2 Completed primitive-0.7.1.0 Starting mmorph-1.1.3 Building transformers-base-0.4.5.2 Building mmorph-1.1.3 Building distributive-0.6.2 Completed transformers-base-0.4.5.2 Starting ansi-wl-pprint-0.6.9 Building ansi-wl-pprint-0.6.9 Completed mmorph-1.1.3 Starting scientific-0.3.6.2 Completed distributive-0.6.2 Starting monad-control-1.0.2.3 Building scientific-0.3.6.2 Building monad-control-1.0.2.3 Completed ansi-wl-pprint-0.6.9 Starting pipes-4.3.14 Building pipes-4.3.14 Completed unordered-containers-0.2.12.0 Starting comonad-5.0.6 Completed monad-control-1.0.2.3 Starting optparse-applicative-0.15.1.0 Building optparse-applicative-0.15.1.0 Completed scientific-0.3.6.2 Starting attoparsec-0.13.2.4 Building attoparsec-0.13.2.4 Building comonad-5.0.6 Completed pipes-4.3.14 Starting pipes-safe-2.3.2 Building pipes-safe-2.3.2 Completed comonad-5.0.6 Starting pipes-parse-3.0.8 Building pipes-parse-3.0.8 Completed optparse-applicative-0.15.1.0 Starting bifunctors-5.5.7 Building bifunctors-5.5.7 Completed pipes-parse-3.0.8 Completed pipes-safe-2.3.2 Completed attoparsec-0.13.2.4 Starting pipes-attoparsec-0.5.1.5 Building pipes-attoparsec-0.5.1.5 Completed pipes-attoparsec-0.5.1.5 Completed bifunctors-5.5.7 Starting semigroupoids-5.3.4 Starting profunctors-5.5.2 Building profunctors-5.5.2 Building semigroupoids-5.3.4 Completed profunctors-5.5.2 Completed semigroupoids-5.3.4 Starting free-5.1.3 Building free-5.1.3 Completed free-5.1.3 Starting pipes-group-1.0.12 Building pipes-group-1.0.12 Completed pipes-group-1.0.12 Starting pipes-bytestring-2.1.6 Building pipes-bytestring-2.1.6 Completed pipes-bytestring-2.1.6 Starting ghc-tags-core-0.2.3.0 Failed to install ghc-tags-core-0.2.3.0 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/ghc-tags-core-0.2.3.0-F4Q3wdRWIHyIqsrPIsrK7X.log ): cabal: Entering directory '/tmp/cabal-tmp-4615/ghc-tags-core-0.2.3.0' Configuring ghc-tags-core-0.2.3.0... cabal: The program 'cpphs' version >=1.20 is required but it could not be found. cabal: Leaving directory '/tmp/cabal-tmp-4615/ghc-tags-core-0.2.3.0' cabal: Error: some packages failed to install: ghc-tags-core-0.2.3.0-F4Q3wdRWIHyIqsrPIsrK7X failed during the configure step. The exception was: ExitFailure 1 ghc-tags-plugin-0.2.3.0-IvrAYt43lj3F84pnuZX1Zl depends on ghc-tags-plugin-0.2.3.0 which failed to install.