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agrafix / Spock

Another Haskell web framework for rapid development
https://www.spock.li
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reroute build failure with ghc 8.4 #140

Closed DanBurton closed 3 years ago

DanBurton commented 6 years ago

Add semigroup instances. See also: https://ghc.haskell.org/trac/ghc/wiki/Migration/8.4#SemigroupMonoidsuperclasses

Building library for reroute-0.4.1.0..
[1 of 4] Compiling Data.PolyMap     ( src/Data/PolyMap.hs, dist/build/Data/PolyMap.o )

src/Data/PolyMap.hs:34:10: error:
    • Could not deduce (Semigroup (PolyMap c f a))
        arising from the superclasses of an instance declaration
      from the context: Alternative f
        bound by the instance declaration at src/Data/PolyMap.hs:34:10-48
    • In the instance declaration for ‘Monoid (PolyMap c f a)’
   |
34 | instance Alternative f => Monoid (PolyMap c f a) where
   |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ziboumima commented 6 years ago

src\Data\PolyMap.hs:34:10: error:

Zialus commented 6 years ago

@DanBurton

Spock-0.13.0.0 and reroute 0.5.0.0 are working fine with ghc 8.4.3