flatpak-builder 0.6.6-1 (powerpc binary) in ubuntu yakkety

 Flatpak installs, manages and runs sandboxed desktop application bundles.
 See the flatpak package for a more comprehensive description.
 .
 flatpak-builder is a tool that makes it easy to build applications and their
 dependencies by automating the configure && make && make install steps.
 .
 On Debian and its derivatives, flatpak-builder does not currently work
 unless the kernel is reconfigured to allow unprivileged users to create
 new user namespaces, which is a security risk.