readme.md

ref:

• https://blog.foresta.me/posts/nvim_and_lsp_for_rust/
• http://wakame.hatenablog.jp/entry/2019/03/31/124941
• https://qiita.com/ubnt_intrepid/items/193de47ed9faf656b596
• https://keens.github.io/blog/2016/12/29/kizuitararustnokankyoukouchikugakanarirakuninatteta/

install_rust.sh

#!/bin/sh
curl https://sh.rustup.rs -sSf | sh -s -- -y
exec $SHELL -l

# for stable
rustup install stable
rustup default stable
rustup component add rust-analysis 
rustup component add rust-src 

# for nightly
rustup install nightly
rustup default nightly
rustup component add rust-analysis 
rustup component add rust-src 

# and add rust-analyzer
brew install rust-analyzer