Install LSP enabled neovim(version 0.5.0+)

Install the latest deoplete

Install and configure nvim-lspconfig

g:deoplete#lsp#handler_enabled: If you set it to v:true, you can disable hover handler.

g:deoplete#lsp#use_icons_for_candidates: Set to v:true to enable icons for LSP candidates. Requires patched font: https://www.nerdfonts.com/