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Re: SystemD & Symbolic Links

From: ng0
Subject: Re: SystemD & Symbolic Links
Date: Tue, 27 Dec 2016 10:02:11 +0000

Hilco Wijbenga <address@hidden> writes:

> On 26 December 2016 at 19:48, Leo Famulari <address@hidden> wrote:
>> On Mon, Dec 26, 2016 at 03:14:42PM -0800, Hilco Wijbenga wrote:
>>> Specifically, "systemctl enable guix-daemon" fails with "Failed to
>>> execute operation: Too many levels of symbolic links" (see [1]). Is
>>> there a workaround for this? I suppose I could simply copy
>>> guix-daemon.service into /etc/systemd/system instead of linking to it
>>> but I'm not sure how many other things will fail because of this
>>> symlink limitation.
>> I recommend copying the service file as you suggested. It's exactly what
>> I do on Debian, both before systemd 231 and after, and it works fine for
>> me.
> Okay, thanks. Why also for systemd >=231?
>> If the ExecStart value contains a path to '/gnu/store/...', you should
>> replace that path with
>> '/var/guix/profiles/per-user/root/guix-profile/bin/guix-daemon'.
>> Using the absolute path to /gnu/store only works properly if the service
>> file is a symlink to root's profile, in which case the executable path
>> would get updated as root updates their packages. My suggested
>> replacement will have the same effect.
>> If you do that, make sure to recreate the rest of the ExecStart value
>> after the path to the guix-daemon.
> Mmm, okay, I'll keep that in mind.
>> PS What OS are you using? I'm wondering if it's too early to rely on
>> systemd 231 being widely deployed.
> This was the latest OpenSUSE (LEAP 42.2) that I'm thinking of using at
> work. At home I use Gentoo but without systemd so I should not have
> any issues there.

There exists a package (and service) for Gentoo in the
youbroketheinternet-overlay, but I no longer maintain
it. Improvements welcome, especially for the service which can
slow down shutdown / reboot to 30 minutes and more.
I no longer use Gentoo, but contributions are easy and
welcome. Maybe we can get the openrc one day generic enough to
include it in Guix.
I no longer use Gentoo so I can't test.
The way most people who use Gentoo here seem to have done it is
using not the package. At least one person in IRC uses Guix on
Gentoo (ZombieChicken ?).

>> PPS It's "Guix", without all capital letters :)
> Huh, yes, I don't know why I made it all caps. :-) And systemd doesn't
> have any caps either. What is this world coming too! ;-)

♥Ⓐ  ng0
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