Steps to reproduce:

1. Log into the console using your regular user
2. Log into GUI using your regular user
3. Log out of GUI
4. Switch to logged-in console
5. Run "px --tree" there
6. Observe the following:

shepherd(1)
   accounts-daemon(1110)
   avahi-daemon:(2443)
     avahi-daemon:(2446)
   bluetoothd(1026)
   colord(25587)
   cupsd(2440)
   dbus-daemon(769)
   dnsmasq(1845)
     dnsmasq(1846)
   earlyoom(744)
   elogind(1024)
   gdm(1038)
   guix-daemon(740)
   libvirtd(1023)
   login(26536)
     -bash(6739)
   mcron(747)
   mingetty... (5×)
   ModemManager(1276)
   NetworkManager(1256)
   nginx:(797)
     nginx:(798)
   nscd(2177)
   polkitd(1231)
   postgres(852)
     postgres:... (6×)
   rasdaemon(796)
   rpc.idmapd(2447)
   rpc.mountd(2501)
   rpc.statd(2444)
   rpcbind(2441)
   shepherd(6395) <--- also dannym
     [dbus-daemon](6397)
     [ssh-agent](6444)
     [xdg-permission-](6411)
     wireplumber(6399)
   shepherd(26114) <--- dannym
     dbus-daemon(6881)
     pipewire(6882)
     pipewire-pulse(6883)
     ssh-agent(6880)
     wireplumber(6888)
     xdg-permission-store(7259)
   udevd(330)
   upowerd(1025)
   virtlogd(742)
   wpa_supplicant(1045)

Those "[...]" with brackets mean that these processes were not reaped
(so is defunct).

What the hell?

$ guix describe
Generation 194  Mar 13 2025 19:11:33    (current)
   guix 678b3dd
     repository URL: https://git.savannah.gnu.org/git/guix.git
     branch: master
     commit: 678b3dddfe442e643fe5cff7730d4f9690c3e2c2