I don't want to use anything but the stable toolchain for my normal work but would like to be able to debug my macros using expand. I don't even now how to use anything but the default stable tool chain.
1 Answers
You can install nightly rust with rustup toolchain install nightly, then you can run cargo as nightly with rustup run nightly cargo [...more arguments here] or cargo +nightly [...more arguments here]. If you want your normal cargo command to be replaced with nightly as well then you can run rustup default nightly.
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