Comment 18 for bug 1836823

This isn't building on xenial, due to unsatisfied build-depends:
The following packages have unmet dependencies:
 builddeps:./ : Depends: python-cryptography (>= 1.3.4) but 1.2.3-1ubuntu0.2 is to be installed
                Depends: python-idna (>= 2.5) but 2.0-3 is to be installed
                Depends: python3-cryptography (>= 1.3.4) but 1.2.3-1ubuntu0.2 is to be installed
                Depends: python3-idna (>= 2.5) but 2.0-3 is to be installed

xenial has:
python-cryptography{,3} 1.2.3-1ubuntu0.2
python-idna{,3} 2.0-3

@ec0 how did you build and test this updated package on xenial? Did you have something installed from outside of the ubuntu archive, or did you backport those dependencies as well?