This allows configuring IP addresses on a tinc interface using
networking.interfaces."tinc.${n}".ipv[46].addresses.

Previously, this would fail with timeouts, because of the dependency
chain
tinc.${netname}.service
--after--> network.target
--after--> network-addresses-tinc.${n}.service (and network-link-…)
--after--> sys-subsystem-net-devices-tinc.${n}.device

But the network interface doesn't exist until tinc creates it! So
systemd waits in vain for the interface to appear, and by then the
network-addresses-* and network-link-* units have failed. This leads
to the network link not being brought up and the network addresses not
being assigned, which in turn stops tinc from actually working.

It was previously in the "test" set, which seemed an inappropriate
placement.

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/python3.7-pympler/versions

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/xonsh/versions

Kernel config: use PREEMPT_VOLUNTARY

…aces

nixos/tinc: remove ordering dependency on network.target

xonsh: 0.8.12 -> 0.9.0

* chirp: 20190304 -> 20190429
Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/chirp-daily/versions

* chirp: 20190429 -> 20190511

python37Packages.pympler: 0.6 -> 0.7

pg_partman: init at 4.1.0