From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: hiding =?utf-8?Q?=E2=80=9Cguix_system=E2=80=9D?= messages
Date: Wed, 22 Aug 2018 16:23:40 +0200
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References: <87va83sfuz.fsf@elephly.net>
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In-Reply-To: <87va83sfuz.fsf@elephly.net> (Ricardo Wurmus's message of "Tue,
	21 Aug 2018 21:02:12 +0200")
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To: Ricardo Wurmus <rekado@elephly.net>
Cc: guix-devel@gnu.org

Hello!

Ricardo Wurmus <rekado@elephly.net> skribis:

> when installing / building / reconfiguring a system, Guix spawns a few
> tools that produce output that might be confusing or misleading.  One
> example is the output of the GRUB installation, which says things like
> =E2=80=9CInstallation finished. No error reported.=E2=80=9D or that it=E2=
=80=99s installing
> something for a 386 system.
>
> I think we should hide (redirect to a log file) or at least prefix
> messages that are produced by tools that Guix spawns.  We could then
> deliberately print messages that indicate the =E2=80=9Cphases=E2=80=9D of=
 installing the
> system, such as =E2=80=9CInstalling GRUB=E2=80=A6=E2=80=9D, =E2=80=9CCrea=
ting user accounts=E2=80=A6=E2=80=9D, etc.

Prefixing sounds like a good idea; hiding might end up hiding too much,
so I=E2=80=99m more wary about that.

If we do prefixing, probably we just need a variant of =E2=80=98invoke=E2=
=80=99 that
runs the program in a pipe, reads its output, and prints the prefixed
lines.

Thoughts?

Ludo=E2=80=99.