rustup-default
Set the default Rust toolchain
TLDR
Set default toolchain
$ rustup default stable
Set nightly as default$ rustup default nightly
Set specific version$ rustup default [1.70.0]
Show current default$ rustup default
SYNOPSIS
rustup default [toolchain]
DESCRIPTION
rustup default sets or shows the default Rust toolchain. The default toolchain is used when no override is active (via `rustup override` or `rust-toolchain.toml`). Common choices are stable, beta, or nightly. If the specified toolchain is not installed, rustup will download and install it automatically.
PARAMETERS
toolchain
Toolchain name: stable, beta, nightly, or a specific version like 1.70.0. Can include a target triple (e.g., `nightly-x86_64-unknown-linux-gnu`).
INSTALL
sudo apt install rustup
sudo dnf install rustup
sudo pacman -S rustup
sudo zypper install rustup
brew install rustup
nix profile install nixpkgs#rustup
CAVEATS
Project-level overrides (from `rust-toolchain.toml` or `rustup override`) take precedence over the default. Changing the default does not affect projects that have overrides set.
SEE ALSO
rustup(1), rustup-toolchain(1), rustup-override(1)