nightly toolchain still required

[wottpal]

As far as I'm aware, cargo-contract doesn't require the nightly toolchain anymore to be installed since v2 but instead the stable one. Though, contracts-node still requires it, which results in the need to install both toolchains when setting things up. Is this still really required or is this error only a leftover?

[athei]

Substrate still requires nightly. It is the wasm-builder crate that enforces this rule.