I think the witness for Legacy should go into ScriptSig component for PSBT. Would also require translation from witness into script. See: https://github.com/rust-bitcoin/rust-miniscript/blob/87a47e242dc19c517ca06c558cf79b43eec22abf/src/psbt/mod.rs#L171
I think the witness for Legacy should go into ScriptSig component for PSBT. Would also require translation from witness into script.
See:
rust-miniscript/src/psbt/mod.rs
Line 171 in 87a47e2