From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Kost <alezost@gmail.com>
Subject: Re: Using symlinks in 'local-file'
Date: Sat, 20 Jun 2015 19:35:14 +0300
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In-Reply-To: <87d20s3xyq.fsf@gnu.org> ("Ludovic
	\=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\=
	\=\?utf-8\?Q\?s\?\= message of "Fri, 19 Jun 2015 10:26:53 +0200")
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To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: guix-devel@gnu.org

Ludovic Court=C3=A8s (2015-06-19 11:26 +0300) wrote:

> Alex Kost <alezost@gmail.com> skribis:
[...]
>> I agree, getting an error is better than a broken link, so I'm for
>> making (#:recursive? #f) a default.  And resolving symlinks would
>> probably be even better.
>
> Done in commits 020f3e4 and 7833db1.

I see, thank you!

>>>> (define (call-derivation drv)
>>>>   (apply system*
>>>>          (cons (derivation-builder drv)
>>>>                (derivation-builder-arguments drv))))
>>>
>>> This is quite original.  ;-)
>>
>> I suppose that's a polite version of "That's not how it should be done".
>
> Well, yes and no; I find it clever actually.
>
>> I just don't know what the proper way to "call" derivation is :-)
>
> With =E2=80=98build-derivations=E2=80=99, which lets guix-daemon built it=
 on your behalf
> in a container.
>
> Roughly, what the daemon does is:
>
>    (eval-in-container
>      #~(apply system*
>               (cons (derivation-builder drv)
>                     (derivation-builder-arguments drv))))
>
> in terms of David=E2=80=99s forthcoming =E2=80=98eval-in-container=E2=80=
=99.  ;-)

Thanks for the explanation.

--=20
Alex