> if you wrap all of the opcodes, you still need a means to connect
> a-/k-/etc. vars, and you can not create them from a host language.

A host language see three possible functions: i-rate, k-rate and a-rate.
It is enough an abstraction in the foreign lang to select the correct call.
For example

  (oscil :ar .7 (oscil :ar 50 8 1) 1)

calls `oscset' and `oscka' and the nested oscil calls `oscset' and `osckk'.
The variables are only in the csound-language.

tito

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