They should enable the nightly-only "auto cfg" feature to also help out e,g, https://docs.rs/clap/latest/clap/macro.command.html https://docs.rs/clap/latest/cl

They should enable the nightly-only "auto cfg" feature to also help out e,g, https://docs.rs/clap/latest/clap/macro.command.html https://docs.rs/clap/latest/clap/macro.command.html To enable - Add a `cfg`: https://github.com/clap-rs/clap/blob/master/Cargo.toml#L48 https://github.com/clap-rs/clap/blob/master/Cargo.toml#L48 - Enable the nightly feature when the `cfg` is present: https://github.com/clap-rs/clap/blob/master/src/lib.rs#L79 https://github.com/clap-rs/clap/blob/master/src/lib.rs#L79