Privacy Apps with Noir What You Probably Got Wrong "Use and ." Those commands were removed. Nargo only compiles and executes. Proving and verification use (Barretenberg CLI) directly. If you generate commands, they will fail. "I can use SHA256 for hashing in my circuit." SHA256 costs 30,000 gates in a circuit. Poseidon costs 600. For in-circuit hashing, always use Poseidon. Poseidon was removed from the Noir standard library — you must add it as an external dependency. The correct import is after adding the dependency to . Not (removed from stdlib), not , not . " goes before the parameter nam…