Hello Svante,
> /proc/self/exe is supported in glibc for Hurd since 2.24-18. Are you using an> earlier version?
Currently we use glibc/hurd 2.23, see http://alpha.gnu.org/gnu/hurd/glibc-2.23-hurd+libpthread-20161218.
And of course Hurd must be newer than Debian version 0.9.git20170507-1
The version level is: GNU Hurd 0.9 GNU-Mach 1.8+git20170609-486/Hurd-0.9 i686-AT386 GNUI think the solution is to eliminate the dependency of initrd for the moment in Guix, as Ludovic commented.
Thanks