Hi, tiantian writes: > I want to add an menu-entry in bootloader-configuration. I use uuid to > specify the partition in device field of menu-entry , because my > partition has no label. But when I use 'guix system reconfigure', guix > system reports an error: "guix system: error: #< type: dce bv: > #vu8(109 91 19 212 96 146 70 208 139 228 7 61 192 116 19 204)>: invalid > G-expression input" Right, this is an issue with how we translate the menu-entries to sexps through `menu-entry->sexp`, which then get embedded into a g-exp via `operating-system-boot-parameters-file`! We didn't take into account non-string devices there. The following two patches should fix the issue and introduce some tests for it. Best, -- Josselin Poiret