Comment by steveklabnik

We definitely have plans to get clippy working on stable Rust; though I will say, with clippy, using nightly is less of a big deal, since it's not something you depend on, it's a tool you use.

> if I could configure cargo to only use nightly Rust when invoking clippy,

This is

    rustup run nightly cargo clippy

or

    cargo +nightly clippy

if you have rustup installed.