[Haskell-cafe] Collecting examples where GHC generates unintuitive error messages

Simon Thompson S.J.Thompson at kent.ac.uk
Tue Jun 6 11:27:11 UTC 2017

I did something like this for Hugs a long time ago. Not directly relevant, but might be of interest.

Simon T.
> On 6 Jun 2017, at 08:46, Siddharth Bhat <siddu.druid at gmail.com> wrote:
> Hello all,
> A discussion of GHC and error messages came up on ghc-devs. I'd like to give back to the community and try to improve this part of GHC. So, I created a repo to collect error messages (https://github.com/bollu/hask-error-messages-catalog <https://github.com/bollu/hask-error-messages-catalog>). That way, there's some concrete context for anyone who's working on the error messages subsystem of GHC.
> Elm does this as well (https://github.com/elm-lang/error-message-catalog <https://github.com/elm-lang/error-message-catalog>), though they catalogue *all* errors.
> I'd be grateful for short examples where GHC generates unintuitive error messages, and perhaps a short explanation of what *would* be useful if possible. If you do have certain examples, please either open a pull request against the repository, or post a snippet on the mailing list. 
> Thanks for the help,
> ~Siddharth
> -- 
> Sending this from my phone, please excuse any typos!
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Simon Thompson | Professor of Logic and Computation 
School of Computing | University of Kent | Canterbury, CT2 7NF, UK
s.j.thompson at kent.ac.uk <mailto:s.j.thompson at kent.ac.uk> | M +44 7986 085754 | W www.cs.kent.ac.uk/~sjt <http://www.cs.kent.ac.uk/~sjt>
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