[GHC] #14490: TTG Snags

Alan & Kim Zimmerman alan.zimm at gmail.com
Wed Nov 22 13:30:11 UTC 2017


Yes, but it is not feasible before GHC 8.6, due to needing GHC >= 8.2 for
bootstrapping.



On 22 November 2017 at 15:26, GHC <ghc-devs at haskell.org> wrote:

> #14490: TTG Snags
> -------------------------------------+----------------------
> ---------------
>         Reporter:  alanz             |                Owner:  (none)
>             Type:  bug               |               Status:  new
>         Priority:  normal            |            Milestone:
>        Component:  Compiler          |              Version:  8.3
>       Resolution:                    |             Keywords:
> Operating System:  Unknown/Multiple  |         Architecture:
>                                      |  Unknown/Multiple
>  Type of failure:  None/Unknown      |            Test Case:
>       Blocked By:                    |             Blocking:
>  Related Tickets:  #14482            |  Differential Rev(s):
>        Wiki Page:                    |
>   ImplementingTreesThatGrow          |
> -------------------------------------+----------------------
> ---------------
>
> Comment (by Shayan-Najd):
>
>  > So making a Data instance per concrete version may be the best way to
>  go. Plan B.
>
>  Regardless of the GHC version we use, the question is whether Plan B
>  really fixes the build-time problem. Can we test it?
>
> --
> Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14490#comment:31>
> GHC <http://www.haskell.org/ghc/>
> The Glasgow Haskell Compiler
>
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