A search for "cairosvg" in ALARM packages gives 2 results for the same package: https://archlinuxarm.org/packages/any/cairosvg and https://archlinuxarm.org/packages/any/python-cairosvg.
Upstream only has one package: https://archlinux.org/packages/?sort=&q=cairosvg&maintainer=&flagged=
On every update it wants to replace one package by the other. I think cairosvg has to be deleted but I don't know where as I can't find the package in https://github.com/archlinuxarm/PKGBUILDs/tree/master/community.