bug#38653: wpa-supplicant dbus failure leads to networking service failure

[Christopher Howard <christopher@alaskasi.com>]

Under this guix commit, wpa_supplicant service fails to initialize,
which takes out networking also.

'''
root@eowyn ~# guix describe
Generation 2	Dec 17 2019 08:30:38	(current)
  guix 328dd9b
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: 328dd9b7c2030dfb66013e12f055b5b449c94007
'''

From /var/log/messages:

'''
Dec 17 09:31:29 localhost wpa_supplicant[361]: dbus: Could not request
service name: already registered
Dec 17 09:31:46 localhost vmunix: [   35.824562] input: HDA Intel Rear
Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
Dec 17 09:31:46 localhost vmunix: [   35.824618] input: HDA Intel Line
as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
Dec 17 09:31:46 localhost vmunix: [   35.824673] input: HDA Intel Line
Out as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12
Dec 17 09:31:46 localhost vmunix: [   35.824740] input: HDA Intel Front
Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input13
Dec 17 09:31:46 localhost vmunix: [   36.012141] fbcon: inteldrmfb
(fb0) is primary device
Dec 17 09:31:46 localhost vmunix: [   36.048479] Console: switching to
colour frame buffer device 240x75
Dec 17 09:31:46 localhost vmunix: [   36.070192] i915 0000:00:02.0:
fb0: inteldrmfb frame buffer device
Dec 17 09:31:46 localhost vmunix: [   36.305107] iTCO_vendor_support:
vendor-support=0
Dec 17 09:31:46 localhost vmunix: [   36.380964] gpio_ich
gpio_ich.1.auto: GPIO from 462 to 511
Dec 17 09:31:47 localhost vmunix: [   36.403431] iTCO_wdt: Intel TCO
WatchDog Timer Driver v1.11
Dec 17 09:31:47 localhost vmunix: [   36.403469] iTCO_wdt: Found a ICH7
or ICH7R TCO device (Version=2, TCOBASE=0x0860)
Dec 17 09:31:47 localhost vmunix: [   36.403620] iTCO_wdt: initialized.
heartbeat=30 sec (nowayout=0)
Dec 17 09:31:47 localhost vmunix: [   36.778818] tg3 0000:02:00.0
enp2s0: renamed from eth0
Dec 17 09:31:29 localhost dbus-daemon[321]: [system] Activating service
name='org.freedesktop.Accounts' requested by ':1.6' (uid=0 pid=360
comm="/gnu/store/akg524gv9skpl3pyj36rcw61xvpk3131-g
dm-3.") (using servicehelper)
Dec 17 09:31:47 localhost vmunix: [   37.379918] dcdbas dcdbas: Dell
Systems Management Base Driver (version 5.6.0-3.3)
Dec 17 09:31:47 localhost vmunix: [   37.446154] intel_powerclamp: No
package C-state available
Dec 17 09:31:47 localhost vmunix: [   44.047624] usb 1-3.4.4: Warning!
Unlikely big volume range (=496), cval->res is probably wrong.
Dec 17 09:31:47 localhost vmunix: [   44.047627] usb 1-3.4.4: [51] FU
[Mic Playback Volume] ch = 1, val = 0/7936/16
Dec 17 09:31:48 localhost vmunix: [   44.052371] usb 1-3.4.4: Warning!
Unlikely big volume range (=1008), cval->res is probably wrong.
Dec 17 09:31:48 localhost vmunix: [   44.052373] usb 1-3.4.4: [49] FU
[Speaker Playback Volume] ch = 2, val = -16129/-1/16
Dec 17 09:31:48 localhost vmunix: [   44.057121] usb 1-3.4.4: Warning!
Unlikely big volume range (=496), cval->res is probably wrong.
Dec 17 09:31:48 localhost vmunix: [   44.057123] usb 1-3.4.4: [50] FU
[Mic Capture Volume] ch = 1, val = 0/7936/16
Dec 17 09:31:48 localhost vmunix: [   44.057512] usbcore: registered
new interface driver snd-usb-audio
Dec 17 09:31:48 localhost vmunix: [   44.906195] usbcore: registered
new interface driver usbkbd
Dec 17 09:31:48 localhost vmunix: [   45.868354] usbcore: registered
new interface driver usbmouse
Dec 17 09:31:30 localhost wpa_supplicant[361]: Failed to initialize
wpa_supplicant
Dec 17 09:31:32 localhost dbus-daemon[321]: [system] Activating service
name='org.freedesktop.PolicyKit1' requested by ':1.7' (uid=0 pid=365
comm="/gnu/store/awhfvskmqyf1p1ddnh9v9s7pqh7cdfyl
-accoun") (using servicehelper)
Dec 17 09:31:48 localhost shepherd[1]: Service wpa-supplicant could not
be started. 
Dec 17 09:31:48 localhost shepherd[1]: Service networking depends on
wpa-supplicant. 
'''

'''
root@eowyn ~# herd start networking
Service wpa-supplicant could not be started.
Service networking depends on wpa-supplicant.
Service networking could not be started.
herd: failed to start service networking
'''

from NeoFetch:
'''
OS: Guix System 328dd9b7c2030dfb66013e12f055b5b449c94007 x86_64 
Host: Vostro 230 00 
Kernel: 5.1.2-gnu 
Uptime: 8 mins 
Packages: 55 (guix-system), 30 (guix-user) 
Shell: bash 5.0.7 
DE: GNOME 3.28.2 
Theme: Adwaita [GTK2/3] 
Icons: Adwaita [GTK2/3] 
Terminal: .gnome-terminal 
CPU: Intel Core 2 Duo E7500 (2) @ 2.291GHz 
GPU: Intel 4 Series Chipset 
Memory: 1496MiB / 3909MiB 
'''

Please let me know if there is a workaround.

-- 
Christopher Howard
Enterprise Solutions Manager
Alaska Satellite Internet
PO Box 70, Ester, AK 99725
3239 La Ree Way, Fairbanks, AK 99709
907.451.0088
1.888.396.5623
www.alaskasatelliteinternet.com