Ramme is an OS Instagram client for the desktop: https://github.com/terkelg/ramme It would be nice to see it added to the tree.
there is a package for arch. This might be a start when writing an ebuild: https://aur.archlinux.org/packages/ramme The bug list is quite long and the project does not seem to be very active. I suggest to put the ebuild rather on an overlay first.