Build #3 for util-0.1.9.0

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Package util-0.1.9.0
Install BuildFailed
Docs NotTried
Tests NotTried
Time submitted 2018-05-07 06:33:24.841358427 UTC
Compiler ghc-8.2.2
OS linux
Arch x86_64
Dependencies base-4.10.1.0
Flags none

Build log

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Resolving dependencies...
Configuring util-0.1.9.0...
Building util-0.1.9.0...
Failed to install util-0.1.9.0
Build log ( /home/builder/.cabal/logs/ghc-8.2.2/util-0.1.9.0-5OEu7pfIdYNF6TLwPGA2zU.log ):
cabal: Entering directory '/tmp/cabal-tmp-17525/util-0.1.9.0'
Configuring util-0.1.9.0...
Preprocessing library for util-0.1.9.0..
Building library for util-0.1.9.0..
[1 of 2] Compiling Util             ( Util.hs, dist/build/Util.o )

Util.hs:136:28: error:
    • Could not deduce (Semigroup b) arising from a use of ‘<>’
      from the context: (Applicative p, Monoid b, Foldable f)
        bound by the type signature for:
                   foldMapA :: forall (p :: * -> *) b (f :: * -> *) a.
                               (Applicative p, Monoid b, Foldable f) =>
                               (a -> p b) -> f a -> p b
        at Util.hs:135:1-77
      Possible fix:
        add (Semigroup b) to the context of
          the type signature for:
            foldMapA :: forall (p :: * -> *) b (f :: * -> *) a.
                        (Applicative p, Monoid b, Foldable f) =>
                        (a -> p b) -> f a -> p b
    • In the first argument of ‘liftA2’, namely ‘(<>)’
      In the first argument of ‘(.)’, namely ‘liftA2 (<>)’
      In the first argument of ‘foldr’, namely ‘(liftA2 (<>) . f)’
    |
136 | foldMapA f = foldr (liftA2 (<>) . f) (pure mempty)
    |                            ^^^^
cabal: Leaving directory '/tmp/cabal-tmp-17525/util-0.1.9.0'
cabal: Error: some packages failed to install:
util-0.1.9.0-5OEu7pfIdYNF6TLwPGA2zU failed during the building phase. The
exception was:
ExitFailure 1