Bandwidth-efficient encrypted backup

Current version

duplicity requires the following formulae to be installed:
python@2 2.7.14_3 Interpreted, interactive, object-oriented programming language
librsync 2.0.2 Library that implements the rsync remote-delta algorithm
openssl 1.0.2o_1 SSL/TLS cryptography library
par2 0.8.0 Parchive: Parity Archive Volume Set for data recovery
gnupg 2.2.6 GNU Pretty Good Privacy (PGP) package

Reverse dependencies

The following formula requires duplicity to be installed:
duply 2.0.4 Frontend to the duplicity backup system

Recent formula history

ilovezfs duplicity: depend on python@2
Ali Razeen duplicity 0.7.17
ilovezfs duplicity: rename python@2 dependency
Viktor Szakats duplicity: secure/fix url(s)
ilovezfs duplicity: switch back to openssl

Formula code at GitHub