both Epiphany and Eolie (post fixing #47097; will submit patch shortly)
fail inside Guix containers with the suggested incantation. After
getting the environment to no longer complain about $DISPLAY by adding
`--preserve="XAUTHORITY" --expose=$XAUTHORITY', it repeatedly outputs
bwrap: Can't find source path /sys/class: No such file or directory
before closing the process altogether.