vim/neovim

Install neovim, xclip (clipboard support), ctags, and the Python 2/3 neovim Python modules.

sudo pacman -S neovim xclip ctags
sudo pip install neovim
sudo pip2 install neovim

Link the vim and neovim configuration.

mkdir -p ~/.vim
ln -s ~/.vim ~/.config/nvim
ln -s ~/.vimrc ~/.config/nvim/init.vim

Create undo and tags directories.

mkdir -p ~/.vim/undo
mkdir -p ~/.vim/tags

Plugins

Install plug.vim

curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
    https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim

YCM plugin installation requires CMake

sudo pacman -S cmake

Install plugins and all the necessary binaries for the vim-go plugin.

:PlugInstall
:GoInstallBinaries

Install the_silver_searcher.

sudo pacman -S the_silver_searcher

Install the Python and JavaScript libraries required by the plugins:

sudo pip2 install isort flake8 pylint
sudo npm install -g jshint