return {
  recommended = true,
  -- copilot
  {
    "zbirenbaum/copilot.lua",
    cmd = "Copilot",
    build = ":Copilot auth",
    event = "InsertEnter",
    opts = {
      suggestion = {
        enabled = not vim.g.ai_cmp,
        auto_trigger = true,
        keymap = {
          accept = false, -- handled by nvim-cmp / blink.cmp
          next = "<M-]>",
          prev = "<M-[>",
        },
      },
      panel = { enabled = false },
      filetypes = {
        markdown = true,
        help = true,
      },
    },
  },

  -- add ai_accept action
  {
    "zbirenbaum/copilot.lua",
    opts = function()
      LazyVim.cmp.actions.ai_accept = function()
        if require("copilot.suggestion").is_visible() then
          LazyVim.create_undo()
          require("copilot.suggestion").accept()
          return true
        end
      end
    end,
  },

  -- lualine
  {
    "nvim-lualine/lualine.nvim",
    optional = true,
    event = "VeryLazy",
    opts = function(_, opts)
      local colors = {
        [""] = LazyVim.ui.fg("Special"),
        ["Normal"] = LazyVim.ui.fg("Special"),
        ["Warning"] = LazyVim.ui.fg("DiagnosticError"),
        ["InProgress"] = LazyVim.ui.fg("DiagnosticWarn"),
      }
      table.insert(opts.sections.lualine_x, 2, {
        function()
          local icon = LazyVim.config.icons.kinds.Copilot
          local status = require("copilot.api").status.data
          return icon .. (status.message or "")
        end,
        cond = function()
          if not package.loaded["copilot"] then
            return
          end
          local ok, clients = pcall(LazyVim.lsp.get_clients, { name = "copilot", bufnr = 0 })
          if not ok then
            return false
          end
          return ok and #clients > 0
        end,
        color = function()
          if not package.loaded["copilot"] then
            return
          end
          local status = require("copilot.api").status.data
          return colors[status.status] or colors[""]
        end,
      })
    end,
  },

  -- copilot cmp source
  {
    "nvim-cmp",
    optional = true,
    dependencies = { -- this will only be evaluated if nvim-cmp is enabled
      {
        "zbirenbaum/copilot-cmp",
        enabled = vim.g.ai_cmp, -- only enable if wanted
        opts = {},
        config = function(_, opts)
          local copilot_cmp = require("copilot_cmp")
          copilot_cmp.setup(opts)
          -- attach cmp source whenever copilot attaches
          -- fixes lazy-loading issues with the copilot cmp source
          LazyVim.lsp.on_attach(function()
            copilot_cmp._on_insert_enter({})
          end, "copilot")
        end,
        specs = {
          {
            "nvim-cmp",
            ---@param opts cmp.ConfigSchema
            opts = function(_, opts)
              table.insert(opts.sources, 1, {
                name = "copilot",
                group_index = 1,
                priority = 100,
              })
            end,
          },
        },
      },
    },
  },

  -- blink.cmp
  {
    "saghen/blink.cmp",
    optional = true,
    opts = {
      windows = { ghost_text = { enabled = false } },
    },
    specs = {
      -- blink has no copilot source, so force enable suggestions
      {
        "zbirenbaum/copilot.lua",
        opts = { suggestion = { enabled = true } },
      },
    },
  },
}