[Haskell-cafe] cpphs broken on GHC 8.6.1

Adam Bergmark adam at bergmark.nl
Sun Aug 12 20:49:49 UTC 2018

After adding MonadFail[1] instances to polyparse, cpphs compiles:
This probably needs some CPP to support older GHCs, perhaps enabling `
-XNoMonadFailDesugaring` is the recommended approach until GHC 8.8.


[1] https://wiki.haskell.org/MonadFail_Proposal

On Sun, 12 Aug 2018 at 05:05 Vanessa McHale <vanessa.mchale at iohk.io> wrote:

> As of the latest release of GHC 8.6.1, cpphs no longer compiles. Anyone
> happen to know what's going on?
> Thanks!
> --
> *Vanessa McHale*
> Functional Compiler Engineer | Chicago, IL
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