From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#17122: More problems with --no-substitutes
Date: Fri, 28 Mar 2014 10:20:54 +0100
Message-ID: <87txair85l.fsf@gnu.org>
References: <8738i3ipsh.fsf@yeeloong.lan> <87y4zvh7zv.fsf@yeeloong.lan>
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To: Mark H Weaver <mhw@netris.org>
Cc: 17122@debbugs.gnu.org

Mark H Weaver <mhw@netris.org> skribis:

> mhw:~/guix-core-updates$ ps auxww | grep guix-daemon
> mhw       1275  3.0  0.2   5248  2688 pts/0    S+   11:40   0:00 grep gui=
x-daemon
> root     13020  0.0  0.2   7552  2496 tty6     S+   Mar22   0:00 guix-dae=
mon --no-substitutes --build-users-group=3Dguix-builder
> root     14429  0.1  0.9  15808 10304 ?        Ss   Mar26   1:05 guix-dae=
mon 14425            --build-users-group=3Dguix-builder
>
> Notice that there's another 'guix-daemon' process here (pid 14429) which
> I didn't start, and which has "--build-users-group=3Dguix-builder" but is
> missing "--no-substitutes".

Process 14429 is a child of the real guix-daemon, as spawned upon
=E2=80=98accept=E2=80=99 success; see nix-daemon.cc:878.

The fact that =E2=80=9C--no-substitutes=E2=80=9D is replaced with =E2=80=9C=
14425=E2=80=9D is a result
from the modification of argvSaved[1] in subsequent lines, and doesn=E2=80=
=99t
change anything regarding substitute handling (which is handled by the
parent process anyway.)

Ludo=E2=80=99.