Advice on lazy-loading LSP via VonHeikemen/lsp-zero.nvim❓

[fooness]

As folke/lazy.nvim is rather new, and VonHeikemen/lsp-zero.nvim is relatively new and maybe not that widely used as jose-elias-alvarez/null-ls.nvim is, I haven’t found any examples for configuring LSP Zero through lazy.nvim in any meaningful way, i.e. making use of the advantages that lazy.nvim brings with it.

My current plugin/lsp-zero.lua file, which is loaded via require("lazy").setup("config.plugin", { … }), looks as follows:

return {
  {
    "VonHeikemen/lsp-zero.nvim",
    event = "VeryLazy", -- lazy-load lsp-zero.nvim itself
    dependencies = {
      {
        "neovim/nvim-lspconfig", -- load nvim-lspconfig on BufReadPre (before loading Treesitter on BufReadPost)
        event = "BufReadPre",
      },
      {
        "williamboman/mason.nvim",
        dependencies = {
          { "williamboman/mason-lspconfig.nvim" },
        },
      },
      {
        "hrsh7th/nvim-cmp",
        event = "InsertEnter", -- load nvim-cmp on InsertEnter; this is ignored(?), as nvim-cmp is loaded with lsp-zero.nvim
        dependencies = {
          { "hrsh7th/cmp-nvim-lsp" },
          { "L3MON4D3/LuaSnip" },
          { "saadparwaiz1/cmp_luasnip" },
          { "rafamadriz/friendly-snippets" },
        },
      },
    },

    -- configuration skeleton below, the details probably don’t matter for setting up lazy.nvim

    config = function()
      local lsp = require("lsp-zero")

      lsp.set_preferences({ … })

      lsp.ensure_installed({ … })

      lsp.setup_nvim_cmp({
        sources = { … }
      })

      local on_attach = function(_, bufnr)
        …
      end

      lsp.on_attach(on_attach)

      lsp.configure("stylelint_lsp", {
        on_attach = on_attach,
        settings = { … },
      })

      lsp.configure("sumneko_lua", {
        on_attach = on_attach,
        settings = { … },
      })

      lsp.setup()
    end
  }
}

The output of :Lazy looks as follows:

 Loaded (25)
    ● Comment.nvim 7.83ms  VeryLazy
    ● LuaSnip 31.56ms  nvim-cmp
    ● cmp-nvim-lsp 2.2ms  nvim-cmp
    ● cmp_luasnip 32.04ms  nvim-cmp
    ● friendly-snippets 0.12ms  nvim-cmp
    ● lazy.nvim 9.34ms  init.lua
    ● lsp-zero.nvim 166.84ms  VeryLazy
    ● lualine.nvim 19.02ms  VeryLazy
    ● mason-lspconfig.nvim 0.11ms  mason.nvim
    ● mason.nvim 0.25ms  lsp-zero.nvim
    ● nvim-cmp 68.11ms  lsp-zero.nvim
    ● nvim-lspconfig 23.68ms  BufReadPre
    ● nvim-treesitter 33.42ms  BufReadPost
    ● nvim-treesitter-context 13.38ms  nvim-treesitter
    ● nvim-ts-autotag 14.5ms  nvim-treesitter
    ● plenary.nvim 0.7ms  telescope.nvim
    ● telescope-fzf-native.nvim 0.2ms  telescope.nvim
    ● telescope.nvim 56.1ms  VeryLazy
    ● vim-closer 0.85ms  FileType
    ● vim-endwise 1.55ms  FileType
    ● vim-fugitive 3.02ms  VeryLazy
    ● vim-gitgutter 4.95ms  VeryLazy
    ● vim-repeat 0.08ms  VeryLazy
    ● vim-speeddating 1.42ms  VeryLazy
    ● vim-surround 2.01ms  VeryLazy

There‘s probably quite some things to improve here; maybe anyone might be willing to share their experiencens and/or advice. Looking forward to learning more about the concept and implementation of lazy-loading.

Thank you.

[folke]

dependencies are always loaded when the parent plugin loads, so you should move those out.

lsp-zero can be lazy-loaded on BufReadPre