new guix on Debian builder is amnesic about its builder group

[Nils Gillmann]

Hi,

this is the 3rd reinstall of Guix I'm doing because every reboot the daemon,
run with the defaul values, no changes, keeps forgetting about its group:

build machine:

address@hidden ~ # guix build --verbosity=10 hello
guix build: error: build failed: the group `guixbuild' specified in 
`build-users-group' does not exist

address@hidden ~ # guix --version
guix (GNU Guix) d8ac79870132a00529825a09d73ad5cb7d2347bd

master:

|   |   building of 
`/gnu/store/ncm2gf31cfw400xnawgfdr53q03brckn-chromium-66.0.3359.139.drv': woken 
up
|   |   building of 
`/gnu/store/ncm2gf31cfw400xnawgfdr53q03brckn-chromium-66.0.3359.139.drv': 
trying to build
|   |   locking path 
`/gnu/store/i3jghzk0kc86lh8rzyl4vaa9gz6hkd5k-chromium-66.0.3359.139'
|   |   lock acquired on 
`/gnu/store/i3jghzk0kc86lh8rzyl4vaa9gz6hkd5k-chromium-66.0.3359.139.lock'
|   |   starting build hook
process 2890 acquired build slot '/var/guix/offload/192.168.1.198/0'
process 2890 acquired build slot '/var/guix/offload/cult.of.n0.is/0'
guix offload: error: failed to connect to '192.168.1.198': No route to host
load on machine 'cult.of.n0.is' is 0.0 (normalized: 0.0)
|   |   hook reply is `accept'
|   |   using hook to build path(s) 
`/gnu/store/i3jghzk0kc86lh8rzyl4vaa9gz6hkd5k-chromium-66.0.3359.139'
|   |   waiting for children
|   |   building of 
`/gnu/store/ncm2gf31cfw400xnawgfdr53q03brckn-chromium-66.0.3359.139.drv': read 
105 bytes
guix offload: error: build failed: the group `guixbuild' specified in 
`build-users-group' does not exist
|   |   waiting for children
|   |   building of 
`/gnu/store/ncm2gf31cfw400xnawgfdr53q03brckn-chromium-66.0.3359.139.drv': got 
EOF
|   |   building of 
`/gnu/store/ncm2gf31cfw400xnawgfdr53q03brckn-chromium-66.0.3359.139.drv': woken 
up
|   |   building of 
`/gnu/store/ncm2gf31cfw400xnawgfdr53q03brckn-chromium-66.0.3359.139.drv': build 
done
|   |   builder process for 
`/gnu/store/ncm2gf31cfw400xnawgfdr53q03brckn-chromium-66.0.3359.139.drv' 
finished
|   |   lock released on 
`/gnu/store/i3jghzk0kc86lh8rzyl4vaa9gz6hkd5k-chromium-66.0.3359.139.lock'
|   |   building of 
`/gnu/store/ncm2gf31cfw400xnawgfdr53q03brckn-chromium-66.0.3359.139.drv': done
|   building of 
`/gnu/store/ncm2gf31cfw400xnawgfdr53q03brckn-chromium-66.0.3359.139.drv': goal 
destroyed
guix package: error: build failed: build of 
`/gnu/store/ncm2gf31cfw400xnawgfdr53q03brckn-chromium-66.0.3359.139.drv' failed



What's the fix for this annoyance? Anything I've missed recently?