Where does rustup install itself to?

Question

I understand that rustup installs the rustc and cargo binaries to ~/.cargo/bin, but where does it install the rustu

Answer 1

By default, rustup is also installed to your home directory:

$ which rustup
/Users/shep/.cargo/bin/rustup

The documentation states:

rustup installs rustc, cargo, rustup and other standard tools to Cargo's bin directory. On Unix it is located at $HOME/.cargo/bin and on Windows at %USERPROFILE%\.cargo\bin. This is the same directory that cargo install will install Rust programs and Cargo plugins.

It goes on to describe how to change the defaults:

rustup allows you to customise your installation by setting the environment variables CARGO_HOME and RUSTUP_HOME before running the rustup-init executable. As mentioned in the Environment Variables section, RUSTUP_HOME sets the root rustup folder, which is used for storing installed toolchains and configuration options. CARGO_HOME contains cache files used by cargo.