MarsSeed [1] filed a deletion request for python-simpleitk-bin [2]: Old, outdated, but seemingly unused binary package for Python 3.9. Uses pip for installation, which is not allowed by Arch Python package guidelines.
There's a newer AUR/python-simpleitk pkg. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-simpleitk-bin/
