- install of e2fsprogs, which contains `debugfs`
- debugfs must be in PATH
Above is needed for the "cp", "cat" and "install" commands and is not documented anywhere.
It turns out I do have a debugfs executable on my system (Debian Stretch 9.4.0), only it is under /sbin, which is not in my normal user's PATH
- mender-artifact checks if debugfs is available when required (e.g. cp, cat, install) and exits with a descriptive error message if not
- the error message includes the name of the required binarie(s) and typical package(s) they would be found in