pip3 install pynvim
pip2 install pynvim
nvim +PlugInstall +UpdateRemotePlugins +qall
or open nvim, and issue following commands.
:PlugInstall
:UpdateRemotePlugins
Check helth of installation using :checkhealth and resolve any issues, you can ignore ruby and node part.
Install COC plugins
:CocInstall coc-json
:CocInstall coc-tsserver
:CocInstall coc-rls
Install Language server for c
apt install ccls