RE: [GHC] #14490: TTG Snags

2017-11-23 Thread Simon Peyton Jones via ghc-devs 
Yes, but it is not feasible before GHC 8.6, due to needing GHC >= 8.2 for 
bootstrapping.
True.  But 8.4 will fork off shortly; so once that is done, we are happy with 
perf, we can add the change to master in preparation for 8.6.

Simon

From: ghc-devs [mailto:ghc-devs-boun...@haskell.org] On Behalf Of Alan & Kim 
Zimmerman
Sent: 22 November 2017 13:30
To: ghc-devs@haskell.org
Subject: Re: [GHC] #14490: TTG Snags

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@haskell.org<mailto:ghc-devs@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<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fghc.haskell.org%2Ftrac%2Fghc%2Fticket%2F14490%23comment%3A31=02%7C01%7Csimonpj%40microsoft.com%7C3556984203554207d6c008d531ad467b%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636469542646255358=s6kHeirmxaeW%2BRTX%2BPLHZl6UriqamOJcUlofDk5UogM%3D=0>>
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Re: [GHC] #14490: TTG Snags

2017-11-22 Thread Alan & Kim Zimmerman 
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  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: 
> GHC 
> The Glasgow Haskell Compiler
>
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