I have a need to maintain a VM in Proxmox as a template that gets shipped as a .qcow2 or .vmdk disk. However, before shipping it, I'd like to make it as small as possible. During installation of software inside the VM I download fairly large files, which then add a lot of "used" space in the image. I've read about 'virt-sparsify' being a good tool to "trim" down the image size. Does anyone a) have any experience with virt-sparsify, and b) it's not in the Debian repos -- so is there a plan to include it with Proxmox?