I visited http://manpages.ubuntu.com/manpages/wily/en/man1/conky.1.html to see which version of conky was available for that release.
Why is only
i386 shown? Even when I viewed any of the older releases, only
i386 was listed.
I know that the 64-bit version is available at least for 14.04 LTS because that is what I have:
$ apt-cache policy conky conky: Installed: 1.9.0-4 Candidate: 1.9.0-4 Version table: *** 1.9.0-4 0 500 http://archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages 100 /var/lib/dpkg/status