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copilot.lua

This plugin is the pure lua replacement for https://github.com/github/copilot.vim

While using copilot.vim, for the first time since I started using neovim my laptop began to overheat. Additionally, I found the large chunks of ghost text moving around my code, and interfering with my existing cmp ghost text disturbing. As lua is far more efficient and makes things easier to integrate with modern plugins, this repository was created.

(IMPORTANT) Usage:

Note that this plugin will only start up the copilot server. The current usage of this is via https://github.com/zbirenbaum/copilot-cmp, which turns copilot suggestions into menu entries for cmp, and displays the full text body in a float, similar to how documentation would appear, off to the side.

On its own, this plugin will do nothing. You must either use https://github.com/zbirenbaum/copilot-cmp to make the server into a cmp source, or write your own plugin to interface with it, via the request and handler methods located in copilot.utils.lua

Install

Preliminary Steps

Currently, you must have had the original copilot.vim installed and set up at some point, as the authentication steps you do during its setup create files in ~/.config/github-copilot which copilot.lua must read from to function. Fairly soon, copilot.lua will be able to perform this authentication step on its own, but as the plugin is in early stages, this has not yet been fully implemented.

Install copilot.vim with use {"github/copilot.vim"}, :PackerSync, restart, and run :Copilot to be prompted for the necessary setup steps.

After the setup steps are complete for copilot.vim, ensure that ~/.config/github-copilot has files in it, and then you are free to uninstall copilot.vim and proceed to the following steps.

Setup

You have to run the require("copilot").setup(options) function in order to start Copilot. If no options are provided, the defaults are used.

Because the copilot server takes some time to start up, I HIGHLY recommend that you load copilot after startup. This can be done in multiple ways, the best one will depend on your existing config and the speed of your machine:

1. On 'VimEnter' + Defer: (My preferred method, works well with fast configs)

use {
  "zbirenbaum/copilot.lua",
  event = {"VimEnter"},
  config = function()
    vim.defer_fn(function()
      require("copilot").setup()
    end, 100)
  end,
}

2. Load After Statusline + defer: (If option (1) causes statusline to flicker, try this)

use {
  "zbirenbaum/copilot.lua",
  after = 'feline.nvim', --whichever statusline plugin you use here
  config = function ()
    vim.defer_fn(function() require("copilot").setup() end, 100)
  end,
}

3. On 'InsertEnter': (The safest way to avoid statup lag. Note: Your copilot completions may take a moment to start showing up)

use {
  "zbirenbaum/copilot.lua",
  event = "InsertEnter",
  config = function ()
    vim.schedule(function() require("copilot").setup() end)
  end,
}

Configuration

The following is the default configuration:

cmp = {
  enabled = true,
  method = "getCompletionsCycling",
},
panel = { -- no config options yet
  enabled = true,
},
ft_disable = {},
plugin_manager_path = vim.fn.stdpath("data") .. "/site/pack/packer",
server_opts_overrides = {},

cmp

Set the enabled field to false if you do not wish to see copilot recommendations in nvim-cmp. Set the method field to getCompletionsCycling if you are having issues. getPanelCompletions previously worked just as quickly, and did not limit completions in the cmp menu to 3 recommendations, but has become so slow completions do not seem to appear due to recent changes from Microsoft. getPanelCompletions also allows for the comparator provided in copilot-cmp to not just place all copilot completions on top, but also sort them by the score copilot assigns them, which is not provided by getCompletionsCycling. Example:

-- Recommended
require("copilot").setup {
  cmp = {
    enabled = true,
    method = "getCompletionsCycling",
  }
},

-- Not Currently Recommended
require("copilot").setup {
  cmp = {
    enabled = true,
    method = "getPanelCompletions",
  }
},

panel

Enabling panel creates the CopilotPanel command, which allows you to preview completions in a split window. Navigating to the split window allows you to jump between them and see each one. ( to accept completion not yet implemented, coming soon)

require("copilot").setup {
  panel = {
    enabled = false,
  }
},

ft_disable

Prevents copilot from attaching to buffers with specific filetypes.

Example:

require("copilot").setup {
  ft_disable = { "markdown", "terraform" },
}

plugin_manager_path

This is installation path of Packer, change this to the plugin manager installation path of your choice

Example:

require("copilot").setup {
  plugin_manager_path = vim.fn.stdpath("data") .. "/site/pack/packer", 
}

server_opts_overrides

Override copilot lsp client settings. The settings field is where you can set the values of the options defined in SettingsOpts.md. These options are specific to the copilot lsp and can be used to customize its behavior. Ensure that the name field is not overriden as is is used for efficiency reasons in numerous checks to verify copilot is actually running. See :h vim.lsp.start_client for list of options.

Example:

require("copilot").setup {
  server_opts_overrides = {
    trace = "verbose",
    settings = {
      advanced = {
        listCount = 10, -- #completions for panel
        inlineSuggestCount = 3, -- #completions for getCompletions
      }
    },
  }
},