Package: apt-show-versions Version: 0.22.11 I just recognised the same with xz-compressed list files.
I agree that best is probably to rely on APT's internal cache commands/functions instead of accessing the list files directly, so no additional extraction needs to be implemented and maintained.
This bug/lack btw makes the package install fail as well as "apt(-get) update" from then on due to its invocation via apt.conf.d.
Best regards, Micha
