[bug#40601] guix-daemon runit service on void

[jgart]

Hi,

I just wanted to give some information about me runnning guix on void linux.

I get the following error when I try to install with guix-install.sh:

[ FAIL ] Init system could not be detected.

That's probably to be expected since runit has not been added yet to the 
guix-install.sh script.

Here is the guix-daemon runit service that I currently run on void linux in 
case it is useful to anyone else:

/etc/sv/guix-daemon/run:

```
#!/bin/sh

exec /var/guix/profiles/per-user/root/current-guix/bin/guix-daemon 
--build-users-group=guixbuild --substitute-urls=https://guix.bordeaux.inria.fr 
2>&1
```

Has anyone tried running guix on void linux? 

If so, are you running something different than above for your runit service?

all best,

jgart
 
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