IK BONE plugin synfig (discontinue)

Because this IK plugin is very slow, especially when using 3 joint bones, it will be discontinued. A replacement will be introduced in the form of a built-in "IK angle converter" inside Synfig, which will be faster and more efficient.

try for linux user download now : https://mailcatrobert.gumroad.com/l/votsfv

install Pygobject

https://pypi.org/project/PyGObject/