Just to add - I repeated the 'guix pull' experiments in the original e-mail on Guix System using a VirtualBox and I could not reproduce either the hanging or backtrace issues described.
So whatever the issue is it's limited to foreign OS use of Guix - but does seem to be repeatable on Ubuntu 18.04 (at least the backtrace is). This may explain why Simon could not reproduce? Phil writes: > Hi, > > Thanks - I think the original question is answered now - however I am > curious over why only I can reproduce issues with the incorrect use of > 'guix pull'. It's tempting to say it's just undefined behaviour and > move on with my life, but I've done a bit more digging....
