aur-packages/deoplete-git/deoplete.install

post_install() {
    echo ""
    echo "    Note: Python3 must be enabled before updating remote plugins
    If Deoplete was installed prior to Python support being added to Neovim, :UpdateRemotePlugins
    should be executed manually in order to enable auto-completion."

    echo ""
    echo "    you might need to add the following to your init.vim:
    \"let g:deoplete#enable_at_startup = 1\""
    echo ""
}