Re: Anybody using the "top-down" solver?

[Luite Stegeman]

On Mon, Nov 9, 2015 at 4:30 AM Bardur Arantsson 
wrote:

> Hi all,
>
> Just to get input from as many people as possible: I was pondering a
> plan for modularizing the solver[1] and wanted to reach as many people
> as possible with my question:
>
>Is anybody is still using the top-down solver?
>
>
We use it for ghcjs-boot, which uses cabal-install to install the GHCJS
boot libraries in the global package db (ghc-prim, template-haskell, base,
ghcjs-prim, ghcjs-base and a bunch of other packages).

There is no fundamental reason that the topdown solver is required. We only
use it because the modular solver blacklists some packages that are risky
to install (like base, template-haskell). I'd be happy to switch to the
modular solver if there's a way to disable the blacklist.

https://github.com/ghcjs/ghcjs/blob/561365ba1667053b5dc5846e2a8edb33eaa3f6dd/src-bin/Boot.hs#L1030-L1056


luite
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Re: Anybody using the "top-down" solver?

[Bardur Arantsson]

On 11/09/2015 05:57 AM, Kim-Ee Yeoh wrote:
> On Mon, Nov 9, 2015 at 11:29 AM, Bardur Arantsson 
> wrote:
> 
>> Just to get input from as many people as possible: I was pondering a
>> plan for modularizing the solver[1] and wanted to reach as many people
>> as possible with my question:
>>
>>Is anybody is still using the top-down solver?
>>
> 
> Cabal-devel isn't the best place for such a question is it?
> 
> Lots of folks might be using cabal in unique ways. But they simply can't be
> expected to subscribe to each and every dev mailing list of each and every
> software they use.
> 
>

It's *a* place.

If you have any suggestions for other places, I'd be happy to hear it :).

Regards,

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Re: Anybody using the "top-down" solver?

[Bardur Arantsson]

On 11/09/2015 05:57 AM, Kim-Ee Yeoh wrote:
> On Mon, Nov 9, 2015 at 11:29 AM, Bardur Arantsson 
> wrote:
> 
>> Just to get input from as many people as possible: I was pondering a
>> plan for modularizing the solver[1] and wanted to reach as many people
>> as possible with my question:
>>
>>Is anybody is still using the top-down solver?
>>
> 
> Cabal-devel isn't the best place for such a question is it?
> 
> Lots of folks might be using cabal in unique ways. But they simply can't be
> expected to subscribe to each and every dev mailing list of each and every
> software they use.
> 
> 

Alright, I've at least "cross-posted" to -cafe. I don't really do reddit
and such, so if you (or anybody else for that matter) could also post a
link to my original post there, I'd appreciate it.

Regards,


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Anybody using the "top-down" solver?

[Bardur Arantsson]

Hi all,

Just to get input from as many people as possible: I was pondering a
plan for modularizing the solver[1] and wanted to reach as many people
as possible with my question:

   Is anybody is still using the top-down solver?

Please respond to this list if you are, especially if you're doing so
because there's no other way to get the modular solver to do what you
want. (Obviously, I'm not promising to fix any problems you may have
with the modular solver, but it would be valuable information since it
could affect the decision of whether we have to keep the top-down solver
around.)

Regards,

--
[1] https://github.com/haskell/cabal/pull/2768#issuecomment-154917165

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Re: Anybody using the "top-down" solver?

[Kim-Ee Yeoh]

On Mon, Nov 9, 2015 at 11:29 AM, Bardur Arantsson 
wrote:

> Just to get input from as many people as possible: I was pondering a
> plan for modularizing the solver[1] and wanted to reach as many people
> as possible with my question:
>
>Is anybody is still using the top-down solver?
>

Cabal-devel isn't the best place for such a question is it?

Lots of folks might be using cabal in unique ways. But they simply can't be
expected to subscribe to each and every dev mailing list of each and every
software they use.

-- Kim-Ee
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Re: Anybody using the "top-down" solver?

[Oleg Grenrus]

I doubt this list has good coverage. You probably should try haskell-cafe?

Another way to put this question:

  Is anybody is still using GHC 6.x?

Cheers,
Oleg

> On 09 Nov 2015, at 06:29, Bardur Arantsson  wrote:
> 
> Hi all,
> 
> Just to get input from as many people as possible: I was pondering a
> plan for modularizing the solver[1] and wanted to reach as many people
> as possible with my question:
> 
>   Is anybody is still using the top-down solver?
> 
> Please respond to this list if you are, especially if you're doing so
> because there's no other way to get the modular solver to do what you
> want. (Obviously, I'm not promising to fix any problems you may have
> with the modular solver, but it would be valuable information since it
> could affect the decision of whether we have to keep the top-down solver
> around.)
> 
> Regards,
> 
> --
> [1] https://github.com/haskell/cabal/pull/2768#issuecomment-154917165
> 
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> 



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