uid 0 error

[Mauritz Stenek]

Hello,

I installed a barebones guix -- i.e. no desktop environment -- 
with the graphical installer.

Then, I tried defining user services as per the Guix blog and the 
Shepherd documentation. Strarting shepherd was giving me this 
error:

     No such file or directory: "/run/user/1000/shepherd"

So, I followed Marius Bakke advice in this posting:

   https://lists.gnu.org/archive/html/bug-guix/2018-11/msg00119.html

and it fixed it: basically I added the elogind service.

Now, however, running a program with sudo ... throws this error

    sudo: /run/current-system/profile/bin/sudo must be owned by 
    uid 0 and have the setuid bit set

If at the login screen, I pick an older config -- one that worked 
before -- it sill gives the setuid error.

How can I fix this?

I also wonder, this goes against the premise of "rollback and 
works", is this a bug/security issue?

--
Mauritz Stenek <mstenek@disroot.org>