-- in init.lua:

vim.pack.add({
  { src = "https://github.com/nvim-treesitter/nvim-treesitter", version = "main" },
  -- my other plugins, including TS related plugins like
  -- nvim-treesitter-context, Wansmer/sibling-sawp.nvim, Wansmer/treesj
})

-- in after/plugin/treesitter.lua

-- Directory to install parsers and queries to
require("nvim-treesitter").setup({
  install_dir = vim.fn.stdpath("data") .. "/site",
})

local langs = {
  -- list of languages
}

require("nvim-treesitter").install(langs)

vim.api.nvim_create_autocmd("FileType", {
  pattern = langs,
  callback = function()
    vim.treesitter.start()
  end,
})