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bug#27037: systemd service files installed by guix 0.13.0 cannot used by

From: 藍挺瑋
Subject: bug#27037: systemd service files installed by guix 0.13.0 cannot used by other distributions
Date: Wed, 24 May 2017 23:37:27 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.0

Leo Famulari 於 西元2017年05月24日 00:16 寫道:
On Tue, May 23, 2017 at 11:33:42PM +0800, 藍挺瑋 wrote:


I found the systemd service files installed by guix 0.13.0
use /var/guix/profiles/per-user/root/guix-profile/bin/guix* instead of
/usr/bin/guix* in ExecStart=. The path /var/guix/profiles don't exist
on systems that don't have guix installed before

I'm a little confused: is there a situation where Guix is not installed
but '/usr/bin/guix-daemon' exists?

This can happen with source installation. 'make install' installs /usr/bin/guix* but not /var/guix. /var/guix doesn't exist until guix-daemon is started.

The path '/var/guix/profiles/per-user/root/guix-profile/bin/guix-daemon'
is guaranteed to exist if you followed the instructions in Binary
Installation [0], which is, as far as I know, the most common way to
install Guix on other distros. So, I think this path is appropriate for
the basic service file we provide.

I think you mean that the systemd service files included in Guix are only intended to be used with binary installation process. Do you mean that using them with traditional 'make install' installation is not supported?

Is it possible to fix systemd service files, so it can be easily used
by packages in other distributions?

I think that, if you are packaging Guix for other distros, you should
provide your own service file. My experience is that each systemd-based
distro uses systemd's advanced features (e.g. process grouping and
resource limiting) in different ways. So, making your own service file,
in accordance with your distro's standards, will help Guix work in a way
that is more idiomatic to the host distro.

Yes, I am packaging Guix for Arch and Fedora, and I use the systemd service files provided by Guix in my packages since version 0.8.3. If doing so is never supported, I can make my own service files like what I did for version 0.6 to 0.8.2 and I think this bug can be closed.

[0] Specifically, it happens during the initial unpacking and renaming:
`mv var/guix /var/ && mv gnu/`

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