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cmp-ai

AI source for hrsh7th/nvim-cmp

This is a general purpose AI source for cmp, easily adapted to any restapi supporting remote code completion.

For now, HuggingFace SantaCoder, OpenAI Chat, Codestral and Google Bard are implemeted.

Install

Dependencies

  • You will need plenary.nvim to use this plugin.
  • For using Codestral, OpenAI or HuggingFace, you will also need curl.
  • For using Google Bard, you will need dsdanielpark/Bard-API.

Using a plugin manager

Using Lazy:

return require("lazy").setup({
    {'tzachar/cmp-ai', dependencies = 'nvim-lua/plenary.nvim'},
    {'hrsh7th/nvim-cmp', dependencies = {'tzachar/cmp-ai'}},
})

And later, tell cmp to use this plugin:

require'cmp'.setup {
    sources = {
        { name = 'cmp_ai' },
    },
}

Setup

Please note the use of : instead of a .

To use HuggingFace:

local cmp_ai = require('cmp_ai.config')

cmp_ai:setup({
  max_lines = 1000,
  provider = 'HF',
  notify = true,
  notify_callback = function(msg)
    vim.notify(msg)
  end,
  run_on_every_keystroke = true,
  ignored_file_types = {
    -- default is not to ignore
    -- uncomment to ignore in lua:
    -- lua = true
  },
})

You will also need to make sure you have the Hugging Face api key in you environment, HF_API_KEY.

To use OpenAI:

local cmp_ai = require('cmp_ai.config')

cmp_ai:setup({
  max_lines = 1000,
  provider = 'OpenAI',
  provider_options = {
    model = 'gpt-4',
  },
  notify = true,
  notify_callback = function(msg)
    vim.notify(msg)
  end,
  run_on_every_keystroke = true,
  ignored_file_types = {
    -- default is not to ignore
    -- uncomment to ignore in lua:
    -- lua = true
  },
})

You will also need to make sure you have the OpenAI api key in you environment, OPENAI_API_KEY.

Available models for OpenAI are gpt-4 and gpt-3.5-turbo.

To use Codestral:

local cmp_ai = require('cmp_ai.config')

cmp_ai:setup({
  max_lines = 1000,
  provider = 'Codestral',
  provider_options = {
    model = 'codestral-latest',
  },
  notify = true,
  notify_callback = function(msg)
    vim.notify(msg)
  end,
  run_on_every_keystroke = true,
  ignored_file_types = {
    -- default is not to ignore
    -- uncomment to ignore in lua:
    -- lua = true
  },
})

You will also need to make sure you have the Codestral api key in you environment, CODESTRAL_API_KEY.

To use Google Bard:

local cmp_ai = require('cmp_ai.config')

cmp_ai:setup({
  max_lines = 1000,
  provider = 'Bard',
  notify = true,
  notify_callback = function(msg)
    vim.notify(msg)
  end,
  run_on_every_keystroke = true,
  ignored_file_types = {
    -- default is not to ignore
    -- uncomment to ignore in lua:
    -- lua = true
  },
})

You will also need to follow the instructions on dsdanielpark/Bard-API to get the __Secure-1PSID key, and set the environment variable BARD_API_KEY accordingly (note that this plugin expects BARD_API_KEY without a leading underscore).

To use Ollama:

local cmp_ai = require('cmp_ai.config')

cmp_ai:setup({
  max_lines = 100,
  provider = 'Ollama',
  provider_options = {
    model = 'codellama:7b-code',
    prompt = function(lines_before, lines_after)
      -- prompt depends on the model you use. Here is an example for deepseek coder
      return '<PRE> ' .. lines_before .. ' <SUF>' .. lines_after .. ' <MID>' -- for codellama
    end,
  },
  debounce_delay = 600, -- ms llama may be GPU hungry, wait x ms after last key input, before sending request to it
  notify = true,
  notify_callback = function(msg)
    vim.notify(msg)
  end,
  run_on_every_keystroke = true,
  ignored_file_types = {
    -- default is not to ignore
    -- uncomment to ignore in lua:
    -- lua = true
  },
})

Models for Ollama are available at here. For code completions use model that supports it - e.g. DeepSeek Base 6.7b

To use with LlamaCpp:

local cmp_ai = require('cmp_ai.config')

cmp_ai:setup {
  max_lines = 30,
  provider = "LlamaCpp",
  provider_options = {
    options = {
      n_predict = 20,  -- number of generated predictions
      min_p = 0.05, -- default 0.05,  Cut off predictions with probability below  Max_prob * min_p
      -- repeat_last_n = 64, -- default 64
      -- repeat_penalty = 1.100, -- default 1.1
      -- see llama server link above - to see other options
    },
    prompt = function(lines_before, lines_after)
      -- prompt depends on the model you use. Here is an example for deepseek coder
      return "<s><｜fim▁begin｜>" .. lines_before .. "<｜fim▁hole｜>" .. lines_after .. "<｜fim▁end｜>" -- for deepseek coder
    end,
  },
  debounce_delay = 600, -- ms llama may be GPU hungry, wait x ms after last key input, before sending request to it
  notify = true,
  notify_callback = function(msg)
    vim.notify(msg)
  end,
  run_on_every_keystroke = false,
  ignored_file_types = {
    -- default is not to ignore
    -- uncomment to ignore in lua:
    -- lua = true
  },
}

LlamaCpp Server has to be started manually with:

./server -m ./models/deepseek-coder-6.7b-base.Q4_K_M.gguf -ngl 50 -c 2048 --log-disable

LlamaCpp requires model in GGUP format. Here is the current model I use for coding:

  • DeepSeek Base 6.7b It is good to have at least 12GB of VRAM to run it (works best with NVIDIA - due to CUDA acceleration). If you want you can grab smaller models too (faster to run, but lower quality of completions)

notify

As some completion sources can be quit slow, setting this to true will trigger a notification when a completion starts and ends using vim.notify.

notify_callback

The default notify function uses vim.notify, but an override can be configured. For example:

notify_callback = function(msg)
  require('notify').notify(msg, vim.log.levels.INFO, {
    title = 'OpenAI',
    render = 'compact',
  })
end

max_lines

How many lines of buffer context to use

run_on_every_keystroke

Generate new completion items on every keystroke.

ignored_file_types (table: <string:bool>)

Which file types to ignore. For example:

local ignored_file_types = {
  html = true,
}

cmp-ai will not offer completions when vim.bo.filetype is html.

Dedicated cmp keybindings

As completions can take time, and you might not want to trigger expensive apis on every keystroke, you can configure cmp-ai to trigger only with a specific key press. For example, to bind cmp-ai to <c-x>, you can do the following:

cmp.setup({
  ...
  mapping = {
    ...
    ['<C-x>'] = cmp.mapping(
      cmp.mapping.complete({
        config = {
          sources = cmp.config.sources({
            { name = 'cmp_ai' },
          }),
        },
      }),
      { 'i' }
    ),
  },
})

Also, make sure you do not pass cmp-ai to the default list of cmp sources.

Pretty Printing Menu Items

You can use the following to pretty print the completion menu (requires lspkind and patched fonts (https://www.nerdfonts.com)):

local lspkind = require('lspkind')

local source_mapping = {
  buffer = '[Buffer]',
  nvim_lsp = '[LSP]',
  nvim_lua = '[Lua]',
  cmp_ai = '[AI]',
  path = '[Path]',
}

require('cmp').setup({
  sources = {
    { name = 'cmp_ai' },
  },
  formatting = {
    format = function(entry, vim_item)
      -- if you have lspkind installed, you can use it like
      -- in the following line:
      vim_item.kind = lspkind.symbolic(vim_item.kind, { mode = 'symbol' })
      vim_item.menu = source_mapping[entry.source.name]
      if entry.source.name == 'cmp_ai' then
        local detail = (entry.completion_item.labelDetails or {}).detail
        vim_item.kind = ''
        if detail and detail:find('.*%%.*') then
          vim_item.kind = vim_item.kind .. ' ' .. detail
        end

        if (entry.completion_item.data or {}).multiline then
          vim_item.kind = vim_item.kind .. ' ' .. '[ML]'
        end
      end
      local maxwidth = 80
      vim_item.abbr = string.sub(vim_item.abbr, 1, maxwidth)
      return vim_item
    end,
  },
})

Sorting

You can bump cmp-ai completions to the top of your completion menu like so:

local compare = require('cmp.config.compare')
cmp.setup({
  sorting = {
    priority_weight = 2,
    comparators = {
      require('cmp_ai.compare'),
      compare.offset,
      compare.exact,
      compare.score,
      compare.recently_used,
      compare.kind,
      compare.sort_text,
      compare.length,
      compare.order,
    },
  },
})