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ivan-m / graphviz

Haskell bindings to the Graphviz toolkit
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Build failure with GHC-8.4.1 #31

Closed recursion-ninja closed 6 years ago

recursion-ninja commented 6 years ago

graphviz cannot be build using ghc-8.4.1 due to a build failure of it's dependency wl-pprint-text with ghc-8-4-1.

ivan-m commented 6 years ago

See #30

geh commented 6 years ago

I am still getting a compile error with GHC 8.4.1 and wl-pprint-text 1.1.1.1:

[ 7 of 31] Compiling Data.GraphViz.Printing ( Data/GraphViz/Printing.hs, dist/build/Data/GraphViz/Printing.o )

Data/GraphViz/Printing.hs:232:16: error:
    Ambiguous occurrence ‘<>’
    It could refer to either ‘Prelude.<>’,
                             imported from ‘Prelude’ at Data/GraphViz/Printing.hs:48:8-29
                             (and originally defined in ‘GHC.Base’)
                          or ‘PP.<>’,
                             imported from ‘Text.PrettyPrint.Leijen.Text.Monadic’ at Data/GraphViz/Printing.hs:(75,1)-(81,68)
    |
232 | wrap b a d = b <> d <> a
    |                ^^
ivan-m commented 6 years ago

Yes, because I haven't updated graphviz yet.