Code review comment for lp:~salgado/linaro-image-tools/fix-packaging-and-ensure-command

That's true, but it's not really distinguishable from the case where someone only wants to create btrfs images and doesn't want to install mkfs.extN.

I was actually wrong earlier; we shouldn't test for e2fsprogs as it's Essential: yes, which means it can be omitted from deps as it's always installed, so our whole discussion is moot :-)

Let's just list either Recommends: btrfs-tools or Suggests: btrfs-tools :-)