Install and reinstall issues on Fedora 34

["Sébastien Pierre" <sebastien.pierre@nzx.com>]

Hi there,

I am evaluating Guix and am running into some issues getting it to work
under Fedora 34 Workstation. I followed the binary install instructions
<https://guix.gnu.org/manual/en/html_node/Binary-Installation.html>,
running the install script from an interactive root shell. All went well, I
rebooted the VM, but then guix-daemon failed to start:

× guix-daemon.service - Build daemon for GNU Guix
     Loaded: loaded (/etc/systemd/system/guix-daemon.service; enabled;
vendor preset: disabled)
     Active: *failed *(Result: exit-code) since Tue 2021-06-15 08:50:44
NZST; 2 days ago
    Process: 691
ExecStart=/var/guix/profiles/per-user/root/current-guix/bin/guix-daemon
--build-users-group=guixbuild (code=exited, status=203/EXEC)

Jun 15 08:50:44 fedora systemd[1]: Started Build daemon for GNU Guix.
Jun 15 08:50:44 fedora systemd[691]: guix-daemon.service: *Failed to locate
executable* /var/guix/profiles/per-user/root/current-guix/bin/guix-daemon:
Permission den>
Jun 15 08:50:44 fedora systemd[691]: guix-daemon.service: Failed at step
EXEC spawning
/var/guix/profiles/per-user/root/current-guix/bin/guix-daemon: Permission
de>
Jun 15 08:50:44 fedora systemd[1]: guix-daemon.service: Main process
exited, code=exited, status=203/EXEC
Jun 15 08:50:44 fedora systemd[1]: guix-daemon.service: Failed with result
'exit-code'.

It seems like a permission error, as the ExecStart path exists and resolves
to the /gnu/store, which is ther. Manually running the command does work as
well. I did try to replace the readlink -f'ed path in the SystemD service:

ExecStart=/gnu/store/0iii8i1lc4wg3wccs1db7y7d8lg80i04-guix-1.3.0/bin/guix-daemon
--build-users-group=guixbuild

But the same Permission Denied/Failed to locate issue remains. I know that
Fedora uses SELinux which sometimes causes some problems, but I'm not sure
about how to resolve that.

Help would be appreciated :)

Many thanks

Sebastien