[arch-general] How to wait efficiently for a package to update?

[Oon-Ee Ng]

So I'm checking out python-sympy for some calculations in the Robotics
subject I teach and realized that a bug was recently fixed in git
which is crucial to what I hope to use it for. python-sympy-git in the
AUR and that's settled.

Then I got to wondering, I only really want to use the -git version
till the next release, but since python-sympy is no longer installed
(conflicts) I wouldn't automatically get it unless I check every once
in a while if version is > 0.7.2.

I figured installing a blank package with nothing in package() named
python-sympy and with version 0.7.2 would allow me to get notified
when python-sympy-0.7.3 or later gets in the repos. Is this a good way
of doing it, or are there better ways?