Resolving dependencies... Configuring base-orphans-0.5.4... Configuring mtl-2.2.1... Building base-orphans-0.5.4... Building mtl-2.2.1... Installed base-orphans-0.5.4 Configuring parallel-3.2.1.0... Building parallel-3.2.1.0... Configuring prelude-extras-0.4.0.3... Installed parallel-3.2.1.0 Configuring primitive-0.6.1.0... Installed mtl-2.2.1 Building prelude-extras-0.4.0.3... Building primitive-0.6.1.0... Configuring reflection-2.1.2... Installed prelude-extras-0.4.0.3 Building reflection-2.1.2... Configuring stm-2.4.4.1... Installed primitive-0.6.1.0 Building stm-2.4.4.1... Configuring semigroups-0.18.2... Installed stm-2.4.4.1 Building semigroups-0.18.2... Configuring transformers-compat-0.5.1.4... Installed reflection-2.1.2 Configuring text-1.2.2.1... Installed semigroups-0.18.2 Building transformers-compat-0.5.1.4... Building text-1.2.2.1... Installed transformers-compat-0.5.1.4 Configuring StateVar-1.1.0.4... Building StateVar-1.1.0.4... Configuring vector-0.11.0.0... Installed StateVar-1.1.0.4 Building vector-0.11.0.0... Configuring tagged-0.8.5... Installed text-1.2.2.1 Building tagged-0.8.5... Configuring exceptions-0.8.3... Installed tagged-0.8.5 Building exceptions-0.8.3... Installed exceptions-0.8.3 Configuring distributive-0.5.0.2... Building distributive-0.5.0.2... Configuring hashable-1.2.4.0... Installed vector-0.11.0.0 Building hashable-1.2.4.0... Installed distributive-0.5.0.2 Installed hashable-1.2.4.0 Configuring unordered-containers-0.2.7.1... Configuring void-0.7.1... Building unordered-containers-0.2.7.1... Building void-0.7.1... Installed void-0.7.1 Configuring contravariant-1.4... Building contravariant-1.4... Installed contravariant-1.4 Configuring keera-hails-reactivevalues-0.2.2.0... Building keera-hails-reactivevalues-0.2.2.0... Configuring comonad-5... Installed unordered-containers-0.2.7.1 Installed keera-hails-reactivevalues-0.2.2.0 Building comonad-5... Installed comonad-5 Configuring bifunctors-5.4.1... Building bifunctors-5.4.1... Installed bifunctors-5.4.1 Configuring profunctors-5.2... Configuring semigroupoids-5.1... Building profunctors-5.2... Building semigroupoids-5.1... Installed profunctors-5.2 Installed semigroupoids-5.1 Configuring free-4.12.4... Building free-4.12.4... Installed free-4.12.4 Configuring adjunctions-4.3... Building adjunctions-4.3... Installed adjunctions-4.3 Configuring kan-extensions-5.0.1... Building kan-extensions-5.0.1... Installed kan-extensions-5.0.1 Configuring lens-4.15.1... Building lens-4.15.1... Installed lens-4.15.1 Configuring keera-hails-reactivelenses-0.0.0.1... Building keera-hails-reactivelenses-0.0.0.1... Failed to install keera-hails-reactivelenses-0.0.0.1 Build log ( /home/builder/.cabal/logs/keera-hails-reactivelenses-0.0.0.1.log ): cabal: Entering directory '/tmp/cabal-tmp-21459/keera-hails-reactivelenses-0.0.0.1' Configuring keera-hails-reactivelenses-0.0.0.1... Building keera-hails-reactivelenses-0.0.0.1... Preprocessing library keera-hails-reactivelenses-0.0.0.1... [1 of 1] Compiling Data.ReactiveLens ( src/Data/ReactiveLens.hs, dist/build/Data/ReactiveLens.o ) src/Data/ReactiveLens.hs:29:16: error: • Couldn't match type ‘(b -> f0 b) -> a -> f0 a’ with ‘Lens' a b’ Expected type: ReactiveFieldReadWrite m a -> ((b -> f0 b) -> a -> f0 a) -> ReactiveFieldReadWrite m b Actual type: ReactiveFieldReadWrite m a -> Lens' a b -> ReactiveFieldReadWrite m b • In the first argument of ‘flip’, namely ‘reactiveFromLens’ In the expression: flip reactiveFromLens In an equation for ‘<$$$>’: (<$$$>) = flip reactiveFromLens • Relevant bindings include (<$$$>) :: Lens' a b -> ReactiveFieldReadWrite m a -> ReactiveFieldReadWrite m b (bound at src/Data/ReactiveLens.hs:29:1) cabal: Leaving directory '/tmp/cabal-tmp-21459/keera-hails-reactivelenses-0.0.0.1' cabal: Error: some packages failed to install: keera-hails-reactivelenses-0.0.0.1 failed during the building phase. The exception was: ExitFailure 1