There are several packages, which install files to /usr/share/vim/vimfiles, e.g.

% pacman -Qo /usr/share/vim/vimfiles
/usr/share/vim/vimfiles/ is owned by cmake 3.3.2-3
/usr/share/vim/vimfiles/ is owned by docker 1:1.9.0-1
/usr/share/vim/vimfiles/ is owned by pacman 4.2.1-4
/usr/share/vim/vimfiles/ is owned by ragel 6.9-1
/usr/share/vim/vimfiles/ is owned by tmux 2.1-1
/usr/share/vim/vimfiles/ is owned by vim-runtime 7.4.884-1

Those are not picked up by Neovim, which does not have it in its &runtimepath by default.

I think that there should either be a symlink installed by Neovim and/or /usr/share/vim/vimfiles/ should be included in Neovim's &rtp, e.g. /usr/share/nvim/site => /usr/share/vim/vimfiles.

The other option, to change all existing packages to also install the files to Neovim's "site" path seems not very elegant.

There might be of course compatibility issues, but then it seems better to address those in a central place, given that Neovim is meant to be quite compatible to Vim.


% vim -u NONE --cmd 'echom &rtp'
/home/user/.vim,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/home/user/.vim/after

% nvim -u NONE --cmd 'echom &rtp'
/home/user/.config/nvim,/etc/xdg/nvim,/home/user/.local/share/nvim/site,/usr/local/share/nvim/site,/usr/share/nvim/site,/usr/share/nvim/runtime,/usr/share/nvim/site/after,/usr/local/share/nvim/site/after,/home/user/.local/share/nvim/site/after,/etc/xdg/nvim/after,/home/user/.config/nvim/after

Additional info:
* neovim-0.1.0-1-x86_64