From mboxrd@z Thu Jan  1 00:00:00 1970
From: myglc2@gmail.com
Subject: bug#31841: ./pre-inst-env guix system no longer works without
	~/.config/guix
Date: Tue, 19 Jun 2018 13:08:53 -0400
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In-Reply-To: <87wouxjft9.fsf@gnu.org> ("Ludovic
	\=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\=
	\=\?utf-8\?Q\?s\?\= message of "Sun, 17 Jun 2018 22:53:06 +0200")
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To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: 31841@debbugs.gnu.org, myglc2@gmail.com, Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>

Hi Ludo=E2=80=99,

On 06/17/2018 at 22:53 Ludovic Court=C3=A8s writes:

> Hello,
>
> Mark H Weaver <mhw@netris.org> skribis:
>
>> I should emphasize that when running Guix this way, if you wish to avoid
>> running 'guix pull', it's important to always keep at least one
>> known-good development environment for Guix saved as a GC root.  Toward
>> that end, when I run "guix environment guix" to update my development
>> environment profile, I make sure to preserve my previous profile as a GC
>> root until I'm confident that my new profile is working.
>
> The =E2=80=9Cmake as-derivation=E2=80=9D command aims to help with this b=
ootstrapping
> problem: given an already installed Guix, it builds your checkout and
> its dependencies like =E2=80=98guix pull=E2=80=99 would do.  Thus, you ca=
n run:
>
>   $(make as-derivation)/bin/guix environment guix

Nice! This is news to me. Thank you for pointing it out.

Does 'make as-derivation' set the "current" symlink normally set by
'guix pull'?

TIA - George