Vim + Covim + python 3

sc.bash

sudo apt install libncurses5-dev libgnome2-dev libgnomeui-dev \
libgtk2.0-dev libatk1.0-dev libbonoboui2-dev \
libcairo2-dev libx11-dev libxpm-dev libxt-dev python-dev \
python3-dev ruby-dev lua5.1 liblua5.1-dev libperl-dev git

sudo apt remove vim vim-runtime gvim

git clone https://github.com/vim/vim.git
cd vim/src

# NOTE THAT the python3-config dir will change as per your local system
./configure --with-features=huge --enable-multibyte --enable-python3interp=yes --enable-pythoninterp=yes --with-python3-config-dir=/usr/lib/python3.6/config-3.6m-x86_64-linux-gnu --enable-perlinterp=yes --enable-luainterp=yes --enable-gui=gtk2 --enable-cscope --prefix=/usr/local

make VIMRUNTIMEDIR=/usr/local/share/vim/vim80 -j 4

sudo apt install checkinstall
sudo checkinstall