The latest commit 176d4db (the one that added Proxmox 7.0 support) seems to break backwards compatibility on proxmox-ve_6.4-1.iso.
Using proxmox-ve_6.4-1.iso...
extracting kernel...
extracting initrd...
gzip: /tmp/initrd.img: unknown suffix -- ignored
gzip: initrd.gz: No such file or directory
The latest commit
176d4db
(the one that added Proxmox 7.0 support) seems to break backwards compatibility on proxmox-ve_6.4-1.iso.Reverting back to commit
f36b384
seems to work.