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Re: [PATCH] profiles: Generate GHC's package database cache.
From: |
Mark H Weaver |
Subject: |
Re: [PATCH] profiles: Generate GHC's package database cache. |
Date: |
Sun, 05 Apr 2015 16:24:31 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) |
Federico Beffa <address@hidden> writes:
> On Sun, Apr 5, 2015 at 7:21 AM, Mark H Weaver <address@hidden> wrote:
>> I believe this will require GHC to build *any* non-empty profile. Since
>> GHC is only available on Intel platforms, this will break profile
>> building on MIPS and ARM.
>>
>> Even on Intel platforms, I don't want to have to install GHC to build
>> profiles that don't contain any Haskell packages, especially since it
>> involves trusting the upstream binaries from GHC.
>
> Good point. Would this check be satisfactory for you?
>
> ;; Don't depend on GHC when there's nothing to do.
> (if (any (cut string-prefix? "ghc" <>)
> (map manifest-entry-name (manifest-entries manifest)))
> (gexp->derivation "ghc-package-cache" build
> #:modules '((guix build utils))
> #:local-build? #t)
> (gexp->derivation "ghc-package-cache" #~(mkdir #$output))))
Sure, this would be fine, although I wonder if we could replace the
'string-prefix?' with 'string=?'. If so, the conditional could be
changed to:
(if (member "ghc" (map manifest-entry-name (manifest-entries manifest)))
...)
What do you think?
>> What if I want to use Hugs instead, or some other Haskell implementation
>> that is capable of being bootstrapped from source code. Is GHC the only
>> tool that can do this job?
>
> As far as I know, the library database is compiler specific. Here we
> are handling GHC only.
Okay, makes sense.
Thank you!
Mark
- [PATCH] profiles: Generate GHC's package database cache., Federico Beffa, 2015/04/04
- Re: [PATCH] profiles: Generate GHC's package database cache., Mark H Weaver, 2015/04/05
- Re: [PATCH] profiles: Generate GHC's package database cache., Federico Beffa, 2015/04/05
- Re: [PATCH] profiles: Generate GHC's package database cache.,
Mark H Weaver <=
- Re: [PATCH] profiles: Generate GHC's package database cache., Federico Beffa, 2015/04/05
- Re: [PATCH] profiles: Generate GHC's package database cache., Federico Beffa, 2015/04/06
- Re: [PATCH] profiles: Generate GHC's package database cache., Mark H Weaver, 2015/04/06
- Re: [PATCH] profiles: Generate GHC's package database cache., Federico Beffa, 2015/04/06
- Re: [PATCH] profiles: Generate GHC's package database cache., Ludovic Courtès, 2015/04/06
- Re: [PATCH] profiles: Generate GHC's package database cache., Alexandre Héaumé, 2015/04/10
Re: [PATCH] profiles: Generate GHC's package database cache., Ludovic Courtès, 2015/04/05