Hi, With no other changes I just ran guix pull and guix system reconfigure on my MacBook2,1 which created an unbootable system. After having completed the reconfiguration I tried to halt or reboot the system but got this error message: > error: connect: /var/run/shepherd/socket: file or directory does not exist I did a hard shutdown and rebooted. I've attached a picture of the kernel panic screen and here is my system configuration: http://paste.lisp.org/display/306452 The OS was quite bootable after my last reconfiguration on January 26. Albin