- Install Rustup
curl https://sh.rustup.rs -sSf | sh
you may need to uninstall existing rust on your machine
sudo /usr/local/lib/rustlib/uninstall.sh
Install Racer
rustup component add rust-src
source $HOME/.cargo/env
cargo install racer
Start your emacs
make sure “melpa” is in your package-archives
(require 'package) (add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/"))
Make Sure you installed racer-mode and company packages, you can view activated packaged list by C-h v package-activated-list
Add following code in your emacs init file
(add-hook 'rust-mode-hook #'racer-mode) (add-hook 'racer-mode-hook #'eldoc-mode) (add-hook 'racer-mode-hook #'company-mode) (require 'rust-mode) (define-key rust-mode-map (kbd "TAB") #'company-indent-or-complete-common) (setq company-tooltip-align-annotations t)
you can find your init file by M-: (Alt + Shift + ; ) and type (find-file user-init-file)
you can let emacs to eval your new setting by type M-x eval-buffer
