Hi,
we've developed a piggy extension board for the raspberry pi that provides (among other things) an rs485 port.
I've wrote a kernel module so that the rs485 port is available as a tty device.
I've had a pre-built .deb package available for users of the raspbian distro for some time and last week I took a look at archlinux and I was very impressed with it's online resources especially it's wiki.
Even better, getting the kernel module to built was straight forward, so I was able to create an arch linux package that builds the module from the source (which is hosted at github) and uploaded it to the AUR webservice: https://aur.archlinux.org/packages/raspicommrs485/
tldr;
As I am new to archlinux in general I would be glad if a regular could take a quick look at the package / PKGBUILD file and point out any obvious mistakes I made.
Thank you!
Take care,
Martin