search

mgsloan / store

Fast binary serialization in Haskell
MIT License
109 stars 35 forks source link

Build failures with GHC-7.10.3 and GHC-7.8.4 #142

Closed phadej closed 4 years ago

phadej commented 5 years ago 
src/Data/Store/Impl.hs:302:1:
    parse error (possibly incorrect indentation or mismatched brackets)

this is due

type family TypeErrorMessage (a :: Symbol) :: Constraint where
#if MIN_VERSION_base(4,9,0)
    TypeErrorMessage a = TypeError (Text a)
#endif

-- Similarly to splitting up the generic class into multiple classes, we
-- also split up the one for sum types.

class KnownNat n => GStoreSizeSum (n :: Nat) (f :: * -> *) where gsizeSum :: f a -> Proxy n -> Int

the above closed type family is empy when base < 4.9; and that's a syntax error.

phadej commented 5 years ago

I made a revision: https://hackage.haskell.org/package/store-0.5.1.1/revisions/

Please setup a CI.

mgsloan commented 4 years ago

Fixed this a while back, closing.

Transferred the repo from fpco/store to mgsloan/store and setup travis CI.

phadej commented 4 years ago

As far as I can see, this regressed in store-0.7, https://matrix.hackage.haskell.org/#/package/store/0.7.0/ghc-7.10.3@1573346546

GHC-7.10

src/Data/Store/Internal.hs:747:10:
    Could not deduce (Generic (Complex a))

GHC-7.8

src/Data/Store/Internal.hs:746:10:
    Could not deduce (GStoreSize (GHC.Generics.Rep (Identity a)))
      arising from a use of ‘Data.Store.Impl.$gdmsize’
mgsloan commented 4 years ago

@phadej Thanks for letting me know, I believe this is fixed in 0.7.1