neovim/runtime/doc/provider.txt

*provider.txt*		Nvim


		 NVIM REFERENCE MANUAL    by Thiago de Arruda


Providers	 						    *provider*

Nvim delegates some features to dynamic "providers".

				      Type |gO| to see the table of contents.

==============================================================================
Python integration		    	      *provider-python*

Nvim supports Python |remote-plugin|s and the Vim legacy |python-vim| and
|python3| interfaces (which are implemented as remote-plugins).
Note: Only the Vim 7.3 API is supported; bindeval (Vim 7.4) is not.

PYTHON QUICKSTART ~

If you used a package manager to install Nvim, you might already have the
required "neovim" Python package. Run |:checkhealth| to verify.

To install the package with "pip":

- For Python 2 plugins, make sure Python 2.7 is available in your $PATH, then
  install the "neovim" Python package systemwide: >
    sudo pip2 install --upgrade neovim
<
  or for the current user: >
    pip2 install --user --upgrade neovim
<
- For Python 3 plugins, make sure Python 3.4+ is available in your $PATH, then
  install the "neovim" Python package systemwide: >
    sudo pip3 install --upgrade neovim
<
  or for the current user: >
    pip3 install --user --upgrade neovim
<
Note: "pip" may refer to Python 2 or Python 3, so the steps above mention
"pip2" and "pip3" explicitly. If one is missing, try "pip".

Note: The `--upgrade` flag ensures you have the latest version even if
a previous version was already installed.

PYTHON PROVIDER CONFIGURATION ~
						*g:python_host_prog*
						*g:python3_host_prog*
Program to use for evaluating Python code. Setting this makes startup faster.
Also useful for working with virtualenvs.  >
    let g:python_host_prog  = '/path/to/python'
    let g:python3_host_prog = '/path/to/python3'
<
						*g:loaded_python_provider*
To disable Python 2 support: >
    let g:loaded_python_provider = 1
<
						*g:loaded_python3_provider*
To disable Python 3 support: >
    let g:loaded_python3_provider = 1

PYTHON VIRTUALENVS ~

If you plan to use per-project virtualenvs often, you should assign
a virtualenv for Neovim and hard-code the interpreter path via
|g:python_host_prog| (or |g:python3_host_prog|) so that the "neovim" python
package is not required for each Environment. Example using pyenv: >
    pyenv install 3.4.4
    pyenv virtualenv 3.4.4 py3neovim
    pyenv activate py3neovim
    pip install neovim
    pyenv which python  # Note the path

The last command reports the interpreter path. Add it to your init.vim: >
    let g:python3_host_prog = '/full/path/to/py3neovim/bin/python'

More information:
https://github.com/zchee/deoplete-jedi/wiki/Setting-up-Python-for-Neovim

==============================================================================
Ruby integration		    	      *provider-ruby*

Nvim supports Ruby |remote-plugin|s and the Vim legacy |ruby-vim| interface
(which is itself implemented as a Nvim remote-plugin).

Run |:checkhealth| to see if your system is up-to-date.

RUBY QUICKSTART ~

To use Ruby plugins with Nvim, install the latest "neovim" RubyGem: >
    gem install neovim

RUBY PROVIDER CONFIGURATION ~
						*g:loaded_ruby_provider*
To disable Ruby support: >
    let g:loaded_ruby_provider = 1
<
						*g:ruby_host_prog*
Command to start the Ruby host. By default this is "neovim-ruby-host". With
project-local Ruby versions (via tools like RVM or rbenv) setting this can
avoid the need to install the "neovim" gem in every project.

To use an absolute path (e.g. to an rbenv installation): >
    let g:ruby_host_prog = '~/.rbenv/versions/2.4.1/bin/neovim-ruby-host'
<

To use the RVM "system" Ruby installation: >
    let g:ruby_host_prog = 'rvm system do neovim-ruby-host'
<
==============================================================================
Node.js integration				*provider-nodejs*

Nvim supports Node.js |remote-plugin|s.
https://github.com/neovim/node-client/

NODEJS QUICKSTART~

To use javascript remote-plugins with Nvim, install the "neovim" npm package: >
    npm install -g neovim

Run |:checkhealth| to see if your system is up-to-date.

NODEJS PROVIDER CONFIGURATION~
						*g:loaded_node_provider*
To disable Node.js support: >
    :let g:loaded_node_provider = 1
<
						*g:node_host_prog*
Command to start the Node.js host. Setting this makes startup faster.

By default, Nvim searches for "neovim-node-host" using "npm root -g", which
can be slow. To avoid this, set g:node_host_prog to an absolute path: >
    let g:node_host_prog = '/usr/local/bin/neovim-node-host'
<
==============================================================================
Clipboard integration 			      *provider-clipboard* *clipboard*

Nvim has no direct connection to the system clipboard. Instead it depends on
a |provider| which transparently uses shell commands to communicate with the
system clipboard or any other clipboard "backend".

To ALWAYS use the clipboard for ALL operations (instead of interacting with
the '+' and/or '*' registers explicitly): >
    set clipboard+=unnamedplus

See 'clipboard' for details and options.

							      *clipboard-tool*
The presence of a working clipboard tool implicitly enables the '+' and '*'
registers. Nvim looks for these clipboard tools, in order of priority:

  - |g:clipboard|
  - pbcopy/pbpaste (macOS)
  - xsel (if $DISPLAY is set)
  - xclip (if $DISPLAY is set)
  - lemonade (for SSH) https://github.com/pocke/lemonade
  - doitclient (for SSH) http://www.chiark.greenend.org.uk/~sgtatham/doit/
  - win32yank (Windows)
  - tmux (if $TMUX is set)

								 *g:clipboard*
To configure a custom clipboard tool, set `g:clipboard` to a dictionary: >
    let g:clipboard = {
          \   'name': 'myClipboard',
          \   'copy': {
          \      '+': 'tmux load-buffer -',
          \      '*': 'tmux load-buffer -',
          \    },
          \   'paste': {
          \      '+': 'tmux save-buffer -',
          \      '*': 'tmux save-buffer -',
          \   },
          \   'cache_enabled': 1,
          \ }

If `cache_enabled` is |TRUE| then when a selection is copied, Nvim will cache
the selection until the copy command process dies. When pasting, if the copy
process has not died, the cached selection is applied.

==============================================================================
X11 selection mechanism			      *clipboard-x11* *x11-selection*

X11 clipboard providers store text in "selections". Selections are owned by an
application, so when the application gets closed, the selection text is lost.
The contents of selections are held by the originating application (e.g., upon
a copy), and only passed to another application when that other application
requests them (e.g., upon a paste).

							      *quoteplus* *quote+*

There are three documented X11 selections: `PRIMARY`, `SECONDARY`, and `CLIPBOARD`.
`CLIPBOARD` is typically used in X11 applications for copy/paste operations
(`Ctrl-c`/`v`), while `PRIMARY` is used for the last selected text, which is
generally inserted with the middle mouse button.

Nvim's X11 clipboard providers only utilize the `PRIMARY` and `CLIPBOARD`
selections, used for the '*' and '+' registers, respectively.

==============================================================================
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