yan12125 [1] filed a deletion request for python-keras2onnx [2]: Upstream stopped maintaining it and recommends another package tf2onnx [1] (maintained by me on AUR as python-tf2onnx). Also, this package does not work with TensorFlow > 2.3 [1][2].
[1] https://github.com/onnx/keras-onnx/issues/737 [2] https://github.com/onnx/keras-onnx/issues/651 [1] https://aur.archlinux.org/account/yan12125/ [2] https://aur.archlinux.org/pkgbase/python-keras2onnx/
