GNU bug report logs - #49101
[PATCH 0/4] Add ocaml-mparser & friends

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Message #23 received at 49101 <at> debbugs.gnu.org (full text, mbox):

From: Xinglu Chen <public <at> yoctocell.xyz>
To: Julien Lepiller <julien <at> lepiller.eu>
Cc: 49101 <at> debbugs.gnu.org
Subject: Re: [bug#49101] [PATCH 0/4] Add ocaml-mparser & friends
Date: Sat, 19 Jun 2021 10:35:25 +0200

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On Sat, Jun 19 2021, Julien Lepiller wrote:

> Le Fri, 18 Jun 2021 21:00:51 +0200,
> Xinglu Chen <public <at> yoctocell.xyz> a écrit :
>
>> This series adds ‘ocaml-mparser’, a monad parser combinator library,
>> plus two extensions for it --- ‘ocaml-mparser-re’ and
>> ‘ocaml-mparser-pcre’.
>> 
>> I noticed that there already exists an ‘ocaml4.07-pcre’ package, what
>> is the policy regarding ‘ocaml4.07-*’ and ‘ocaml-*’ packages?
>> 
>> Xinglu Chen (4):
>>   gnu: Add ocaml-mparser.
>>   gnu: Add ocaml-mparser-re.
>>   gnu: Add ocaml-mparser-pcre.
>>   gnu: Add ocaml-pcre.
>> 
>>  gnu/packages/ocaml.scm | 88
>> ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 88
>> insertions(+)
>> 
>> 
>> base-commit: caf4a7a2770ef4d05a6e18f40d602e51da749ddc
>
> Hi Xinglu,
>
> thank you for the patches! First, you should reorder your patches: we
> try to make sure every revision of guix is correct, but after the third
> patch, ocaml-pcre is missing. I would simply put pcre first :).

Yeah, I think I messed something up when sending them.

> To answer your question, we try to avoid having both the ocaml and
> ocaml4.07 around if possible. It seems that ocaml4.07-pcre is only
> required for ocaml4.07-expect. Could you check if it is possible to
> build expect with our latest ocaml package?
>
> If so, please have a patch that builds pcre and expect with the latest
> ocaml, then another patch for updating pcre to the latest version, then
> your three patches to add mparser.
>
> If not, then we have to keep ocaml4.07-pcre around, so here is how we
> do it, in a single patch:
>
> Replace ocaml4.07-pcre with ocaml-pcre (remove the arguments that use
> ocaml-4.07) and create a new ocaml4.07-pcre that inherits from it. It
> would look like this:
>
> (define-public ocaml-pcre
>   (package
>     (name "ocaml-pcre")
>     ...
>     (properties `((ocaml4.07-variant ,(delay ocaml4.07-pcre))))
>     ...))
>
> (define-public ocaml4.07-pcre
>   (package-with-ocaml4.07
>     (package
>       (inherit ocaml-pcre)
>       ...
>       (properties '()))))
>
> If the latest version of pcre cannot be built with ocaml 4.07, you can
> specify a different source, like we do for ocaml4.07-parsexp for
> instance.

Thanks for the detailed answer!  I think it would be great to have
something like this in the manual :)

> I'm looking forward to v2 of this series :)

Should be coming soon :)

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