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md_create: feature 'mdadm' is not available in this build of libguestfs. Read 'AVAILABILITY' in the guestfs(3) man page for how to check for the availability of features. at /home/noxdafox/development/libguestfs/test-data/phony-guests/make-fedora-img.pl line 103.
All the other packages were already installed. Most of these packages seem to be available to other Debian branches but not on Stretch.
The Debian package 'mdadm' is installed on the machine or not? Assuming it is installed, what is the output of: rm -rf tmp/.guestfs-* ./run guestfish run : supported ? Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-builder quickly builds VMs from scratch http://libguestfs.org/virt-builder.1.html