GNU bug report logs - #35341
First run of 'guix pull' fails to create user profile

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#35341: closed (Guix System installer does not set up
 passwords and profile directories)
Date: Mon, 22 Apr 2019 10:03:01 +0000

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Your message dated Mon, 22 Apr 2019 12:02:03 +0200
with message-id <87zhoi1hpg.fsf <at> gnu.org>
and subject line Re: bug#35341: Guix System installer does not set up passwords and profile directories
has caused the debbugs.gnu.org bug report #35341,
regarding Guix System installer does not set up passwords and profile directories
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: "pelzflorian (Florian Pelz)" <pelzflorian <at> pelzflorian.de>
To: bug-guix <at> gnu.org
Subject: Guix System installer does not set up passwords and profile
 directories
Date: Sat, 20 Apr 2019 14:56:11 +0200

I installed Guix System from a USB flash drive from the current git
master.  The manual describes I should set up a password with passwd.
I think the installer should automate this, so users do not need to
know the passwd command.

After setting a password with `passwd florian` and logging in
as florian, I run `guix pull`.  This yields the following error:

pull: error: while creating directory `/var/guix/profiles/per-user/florian': Permission denied
hint: Please create the `/var/guix/profiles/per-user/florian' directory, with you
as the owner.

This persists after a reboot.

sudo mkdir /var/guix/profiles/per-user/florian
sudo chown florian:users /var/guix/profiles/per-user/florian

fixes the issue, but the installer should do this automatically.

Regards,
Florian

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From: Ludovic Courtès <ludo <at> gnu.org>
To: "pelzflorian \(Florian Pelz\)" <pelzflorian <at> pelzflorian.de>
Cc: 35341-done <at> debbugs.gnu.org
Subject: Re: bug#35341: Guix System installer does not set up passwords and
 profile directories
Date: Mon, 22 Apr 2019 12:02:03 +0200

Hello Florian,

"pelzflorian (Florian Pelz)" <pelzflorian <at> pelzflorian.de> skribis:

> I installed Guix System from a USB flash drive from the current git
> master.  The manual describes I should set up a password with passwd.
> I think the installer should automate this, so users do not need to
> know the passwd command.

I’ll open a separate bug for that.

> After setting a password with `passwd florian` and logging in
> as florian, I run `guix pull`.  This yields the following error:
>
> pull: error: while creating directory `/var/guix/profiles/per-user/florian': Permission denied
> hint: Please create the `/var/guix/profiles/per-user/florian' directory, with you
> as the owner.

Oh, got it.

On a fresh system (one can check with ‘guix system vm bare-bones.tmpl’
for instance), /var/guix/profiles/per-user is 555 and root-owned, so not
writable.

Then, the first time a client such as ‘guix package’ connects to the
daemon, the daemon chmods /var/guix/profiles/per-user to 777
(world-writable), see local-store.cc:89.

Next, ‘guix package’ calls ‘ensure-default-profile’, which creates
/var/guix/profiles/per-user/$USER.

The problem with ‘guix pull’ is that it would call
‘ensure-default-profile’ before it has connected to the daemon.

Fixed in a06a95baffc2005ad1a64c4c3f82fc328e0d0009.

Thanks,
Ludo’.

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