Align to spline with xpresso


Hello! i have a spline i have deformed with a bounch of deformers (displacement, bend, shear), now i want to attach objects on this deformed spline. but i encountered a lot of problems doing this:

Align to spline tag doesnt work on deformed splines

Cloner, matrix, and mospline gives me priority issues

xpresso spline node doesnt work on deformed splines

xpresso point node works, but now i have no idea on how to calculate tangents.
so my question is this: how can i replicate the tangent function i have on align spline tag with xpresso?