Christopher Baines <mail@cbaines.net> writes:

> Modify the package to patch gnu.py with an unreleased upstream change to fix
> duplicity working with recent releases of GnuPG. This change make the package
> build again.
>
> * gnu/packages/backup.scm (duplicity)[arguments]: Patch gnu.py within the
> patch-source phase.
> ---
>  gnu/packages/backup.scm | 9 +++++++++
>  1 file changed, 9 insertions(+)

Pushed now :)