Hi, on a Debian trixie system, `guix gc` fails to find garbage collector roots (with "Permission denied" errors) and then proceeds to delete virtually everything from the store.
I reinstalled Guix to verify this; here is an approximate transcript. (The commit pulled is recent, dated 2026-07-12 UTC. I used `--collect-garbage=0` to prevent required store items from being deleted.) ```console # ./guix-install.sh # v1.5.0 # guix pull --commit=a8391f2d7451c2463ba253ffa9872fa6f27485d7 # As root $ guix pull --commit=a8391f2d7451c2463ba253ffa9872fa6f27485d7 # As user # reboot $ (Various packages installed, guix shell used, etc., as user.) # aa-complain guix-daemon ## Tested with AppArmor profile disabled. # guix gc --collect-garbage=0 finding garbage collector roots... cannot read potential root '/var/guix/gcroots/auto/1nk4s2q84xwjn5rx1xbliw7b9j8g5x5k': Permission denied cannot read potential root '/var/guix/gcroots/auto/kjwm1jravfnv5l81v9234gyyf3il3sl1': Permission denied cannot read potential root '/var/guix/gcroots/auto/vp6jq9wlkjcl72n5ia4n49ddiiv0hwg0': Permission denied cannot read potential root '/var/guix/gcroots/auto/hlyl4syrk7jgckfr7zfs4aic4vdz42gl': Permission denied cannot read potential root '/var/guix/profiles/per-user/user/inferiors': Permission denied cannot read potential root '/var/guix/profiles/per-user/user/profiles': Permission denied deleting `/gnu/store/trash' deleting unused links... note: currently hard linking saves 7.38 GiB guix gc: freed 0 bytes ``` The first symlink resolves as follows: /var/guix/gcroots/auto/1nk4s2q84xwjn5rx1xbliw7b9j8g5x5k -> /var/guix/profiles/per-user/user/inferiors/hl6c4x7vpnrrwidrvyvxgxqrry24hzfzpa7sev3ym3gnz4xszsrq -> /gnu/store/axf351rjirmgkw33plwm5fnzdjcl5xs9-profile In addition to the problem reading the root links, `guix gc` should probably in this case fail with an error rather than proceeding with the gc and deleting required store items. Thanks, Owen
