From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Odd behavior with --dry-run and --upgrade
Date: Mon, 25 Jul 2016 00:18:41 +0200
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In-Reply-To: <87h9bfcteu.fsf@gmail.com> (Alex Kost's message of "Sun, 24 Jul
	2016 11:49:29 +0300")
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To: Alex Kost <alezost@gmail.com>
Cc: guix-devel <guix-devel@gnu.org>

Hi!

Alex Kost <alezost@gmail.com> skribis:

> Roel Janssen (2016-07-23 18:11 +0300) wrote:
>
>> Dear Guix,
>>
>> For some time now, running `guix package --dry-run --upgrade' results in
>> build actions involving grafting.  For a dry-run, I find that really
>> odd.  I believe the correct behavior should be what can be achieved
>> with: `guix package --dry-run --no-grafts --upgrade'.
>
> I'm totally agree with this; nowadays I always use --dry-run with
> --no-grafts option.

Same here=E2=80=A6

> As a user I expect that --dry-run means no building at all.
>
> BTW it's not just about =E2=80=98guix package --dry-run --upgrade=E2=80=
=99, it relates
> to all commands, for example =E2=80=98guix build --dry-run foo=E2=80=99, =
etc.
>
> OTOH, if a future =E2=80=98--dry-run=E2=80=99 would mean what =E2=80=98--=
dry-run --no-grafts=E2=80=99
> means now, than how to achieve what =E2=80=98--dry-run=E2=80=99 means now=
?  Or rather:
> does anyone use just --dry-run (without --no-grafts)?  Is it really
> useful?

In theory it could be useful for =E2=80=98guix build=E2=80=99, since it=E2=
=80=99s a =E2=80=9Clow level=E2=80=9D
tool and people using it may want to be able to distinguish between
grafted and non-grafted results.

But honestly, I think changing =E2=80=98--dry-run=E2=80=99 to do =E2=80=98-=
-dry-run --no-grafts=E2=80=99
would be fine, and probably better than the current situation.

Thoughts?

Ludo=E2=80=99.