Comment 17 for bug 1672740

Here is the information I got:

We have automatic builds created daily from the edge ppa (which is updated from snapd's master content), those land on the edge channel at ~5:30UTC every day. So, if you want a recent core with the latest changes from master you can find that on edge, see https://code.launchpad.net/~snappy-dev/+snap/core/ for the build history. It can be installed with:

    $ sudo snap refresh --edge core

and for going back to stable:

    $ sudo snap refresh --stable core

If you want something more specific you can try to build your own core snap, the code and instructions are at https://github.com/snapcore/core.

This will allow you to test the core snap with the new nplan as soon as nplan has reached xenial-updates (so once the SRU is released, which should be very soon once the fix has been in proposed for 7 days and verified)