install neovim

sudo apt-get install software-properties-common

echo | sudo add-apt-repository ppa:neovim-ppa/stable
sudo apt-get update
echo Y | sudo apt-get install neovim

sudo update-alternatives --install /usr/bin/vi vi /usr/bin/nvim 60
echo | sudo update-alternatives --config vi
sudo update-alternatives --install /usr/bin/vim vim /usr/bin/nvim 60
echo | sudo update-alternatives --config vim
sudo update-alternatives --install /usr/bin/editor editor /usr/bin/nvim 60
echo | sudo update-alternatives --config editor

fix clipboard

apt install xsel

git clone https://github.com/yolin/nvim.git
mv nvim/ ~/.nvim
mkdir -p ${XDG_CONFIG_HOME:=$HOME/.config}
ln -s ~/.nvim $XDG_CONFIG_HOME/nvim
ln -s ~/.nvim/nvimrc $XDG_CONFIG_HOME/nvim/init.vim

fix split window messed up when scrolling

echo 'declare -x COLORTERM="gnome-terminal"' >> ~/.bashrc

install ag, very fast search

apt install silversearcher-ag

install nodejs, for coc plugin

curl -sL https://deb.nodesource.com/setup_14.x | sudo bash -
sudo apt-get install -y nodejs yarn

run vi and type

:PlugInstall
:call mkdp#util#install()
exit run vi again
:CocInstall coc-snippets coc-css coc-json

Troubleshotting

sudo apt-get update
echo Y | sudo apt-get install neovim
cd ~/.nvim/ git fetch git reset --hard origin/master
git clen -f -f -x mkdir -p ${XDG_CONFIG_HOME:=$HOME/.config}
ln -s ~/.nvim $XDG_CONFIG_HOME/nvim
ln -s ~/.nvim/nvimrc $XDG_CONFIG_HOME/nvim/init.vim
vi
:PlugInstall
// if got error, type enter
// if got retry, type R
exit vi
vi again
:call mkdp#util#install()
:CocInstall coc-snippets coc-css coc-json
exit vi finished