Resolving dependencies... Starting cabal-doctest-1.0.8 Starting StateVar-1.2 Starting base-orphans-0.8.2 Starting base-compat-0.11.1 Building cabal-doctest-1.0.8 Building StateVar-1.2 Building base-orphans-0.8.2 Building base-compat-0.11.1 Completed StateVar-1.2 Starting exceptions-0.10.4 Building exceptions-0.10.4 Completed cabal-doctest-1.0.8 Starting fingertree-0.1.4.2 Building fingertree-0.1.4.2 Completed base-orphans-0.8.2 Starting hashable-1.3.0.0 Building hashable-1.3.0.0 Completed exceptions-0.10.4 Starting mtl-compat-0.2.2 Building mtl-compat-0.2.2 Completed mtl-compat-0.2.2 Starting primitive-0.7.1.0 Completed base-compat-0.11.1 Starting semigroups-0.19.1 Building primitive-0.7.1.0 Building semigroups-0.19.1 Completed hashable-1.3.0.0 Starting tagged-0.8.6 Building tagged-0.8.6 Completed semigroups-0.19.1 Starting th-abstraction-0.3.2.0 Completed fingertree-0.1.4.2 Starting transformers-compat-0.6.5 Building th-abstraction-0.3.2.0 Building transformers-compat-0.6.5 Completed tagged-0.8.6 Starting void-0.7.3 Building void-0.7.3 Completed transformers-compat-0.6.5 Starting contravariant-1.5.2 Completed void-0.7.3 Starting unordered-containers-0.2.11.0 Building contravariant-1.5.2 Building unordered-containers-0.2.11.0 Completed th-abstraction-0.3.2.0 Starting async-2.2.2 Building async-2.2.2 Completed contravariant-1.5.2 Starting distributive-0.6.2 Completed async-2.2.2 Starting transformers-base-0.4.5.2 Building transformers-base-0.4.5.2 Building distributive-0.6.2 Completed transformers-base-0.4.5.2 Starting mmorph-1.1.3 Building mmorph-1.1.3 Completed primitive-0.7.1.0 Starting protolude-0.3.0 Building protolude-0.3.0 Completed distributive-0.6.2 Starting vector-0.12.1.2 Completed mmorph-1.1.3 Starting comonad-5.0.6 Building vector-0.12.1.2 Completed unordered-containers-0.2.11.0 Building comonad-5.0.6 Completed comonad-5.0.6 Starting bifunctors-5.5.7 Completed protolude-0.3.0 Building bifunctors-5.5.7 Completed bifunctors-5.5.7 Starting profunctors-5.5.2 Starting numhask-0.6.0.2 Starting semigroupoids-5.3.4 Building numhask-0.6.0.2 Building profunctors-5.5.2 Building semigroupoids-5.3.4 Completed profunctors-5.5.2 Completed semigroupoids-5.3.4 Starting reducers-3.12.3 Starting free-5.1.3 Completed numhask-0.6.0.2 Building free-5.1.3 Building reducers-3.12.3 Completed vector-0.12.1.2 Starting vector-algorithms-0.8.0.3 Building vector-algorithms-0.8.0.3 Completed reducers-3.12.3 Completed vector-algorithms-0.8.0.3 Starting tdigest-0.2.1 Building tdigest-0.2.1 Completed free-5.1.3 Starting adjunctions-4.4 Building adjunctions-4.4 Completed tdigest-0.2.1 Completed adjunctions-4.4 Starting numhask-space-0.6.0 Building numhask-space-0.6.0 Failed to install numhask-space-0.6.0 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/numhask-space-0.6.0-ASirX1NCTluIxIGJ3aJdEA.log ): cabal: Entering directory '/tmp/cabal-tmp-3136/numhask-space-0.6.0' Configuring numhask-space-0.6.0... Preprocessing library for numhask-space-0.6.0.. Building library for numhask-space-0.6.0.. [1 of 8] Compiling NumHask.Space.Types ( src/NumHask/Space/Types.hs, dist/build/NumHask/Space/Types.o ) [2 of 8] Compiling NumHask.Space.Time ( src/NumHask/Space/Time.hs, dist/build/NumHask/Space/Time.o ) src/NumHask/Space/Time.hs:62:44: error: Variable not in scope: nominalDiffTimeToSeconds :: NominalDiffTime -> Fixed a0 | 62 | fromNominalDiffTime t = let (MkFixed i) = (nominalDiffTimeToSeconds t) in (fromInteger i) * 1e-12 | ^^^^^^^^^^^^^^^^^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-3136/numhask-space-0.6.0' cabal: Error: some packages failed to install: numhask-space-0.6.0-ASirX1NCTluIxIGJ3aJdEA failed during the building phase. The exception was: ExitFailure 1