Ok, so in running
sudo -E guix ...
I had messed up my installation, so guix pull didn't work anymore
I think I fixed it now
guix pull ust worked, I reconfigured my system
but this still happens
$ ./pre-inst-env guix system vm ~/configs/vm-config-desktop.scm \
> --image-size=10GB \
> --share=$HOME/transit=/transit
guix system: error: build failed: error parsing derivation `/gnu/store/dp8ywhh22n8ixikqdvsb6w6qbn4iw899-environment.drv': expected string `Derive(['
address@hidden ~/projects/guix$