kickstart.nvim/lua/newbim/plugins/lsp.lua

return { -- LSP Configuration & Plugins
  'neovim/nvim-lspconfig',
  dependencies = {
    -- Automatically install LSPs and related tools to stdpath for neovim
    'williamboman/mason.nvim',
    'williamboman/mason-lspconfig.nvim',
    'WhoIsSethDaniel/mason-tool-installer.nvim',
    'hrsh7th/cmp-nvim-lsp',

    -- Useful status updates for LSP.
    { 'j-hui/fidget.nvim', opts = {} },
  },
  config = function()
    vim.api.nvim_create_autocmd('LspAttach', {
      group = vim.api.nvim_create_augroup('kickstart-lsp-attach', { clear = true }),
      callback = function(event)
        local map = function(keys, func, desc)
          vim.keymap.set('n', keys, func, { buffer = event.buf, desc = 'LSP: ' .. desc })
        end

        -- Jump to the definition of the word under your cursor.
        map('gd', require('telescope.builtin').lsp_definitions, '[G]oto [D]efinition')

        -- Find references for the word under your cursor.
        map('gr', require('telescope.builtin').lsp_references, '[G]oto [R]eferences')

        -- Jump to the implementation of the word under your cursor.
        map('gI', require('telescope.builtin').lsp_implementations, '[G]oto [I]mplementation')

        -- Jump to the type of the word under your cursor.
        map('<leader>D', require('telescope.builtin').lsp_type_definitions, 'Type [D]efinition')

        -- Fuzzy find all the symbols in your current document.
        map('<leader>ds', require('telescope.builtin').lsp_document_symbols, '[D]ocument [S]ymbols')

        -- Fuzzy find all the symbols in your current workspace
        map('<leader>ws', require('telescope.builtin').lsp_dynamic_workspace_symbols, '[W]orkspace [S]ymbols')

        -- Rename the variable under your cursor
        map('<leader>rn', vim.lsp.buf.rename, '[R]e[n]ame')

        -- Execute a code action, usually your cursor needs to be on top of an error
        -- or a suggestion from your LSP for this to activate.
        map('<leader>ca', vim.lsp.buf.code_action, '[C]ode [A]ction')

        -- Opens a popup that displays documentation about the word under your cursor
        map('K', vim.lsp.buf.hover, 'Hover Documentation')

        -- This is Goto Declaration.
        --  For example, in C this would take you to the header
        map('gD', vim.lsp.buf.declaration, '[G]oto [D]eclaration')

        -- The following two autocommands are used to highlight references of the
        -- word under your cursor when your cursor rests there for a little while.
        -- When you move your cursor, the highlights will be cleared (the second autocommand).
        local client = vim.lsp.get_client_by_id(event.data.client_id)
        if client and client.server_capabilities.documentHighlightProvider then
          vim.api.nvim_create_autocmd({ 'CursorHold', 'CursorHoldI' }, {
            buffer = event.buf,
            callback = vim.lsp.buf.document_highlight,
          })

          vim.api.nvim_create_autocmd({ 'CursorMoved', 'CursorMovedI' }, {
            buffer = event.buf,
            callback = vim.lsp.buf.clear_references,
          })
        end
      end,
    })

    -- LSP servers and clients are able to communicate to each other what features they support.
    --  By default, Neovim doesn't support everything that is in the LSP Specification.
    --  When you add nvim-cmp, luasnip, etc. Neovim now has *more* capabilities.
    --  So, we create new capabilities with nvim cmp, and then broadcast that to the servers.
    local capabilities = vim.lsp.protocol.make_client_capabilities()
    capabilities = vim.tbl_deep_extend('force', capabilities, require('cmp_nvim_lsp').default_capabilities())

    -- Enable the following language servers
    --  Feel free to add/remove any LSPs that you want here. They will automatically be installed.
    --
    --  Add any additional override configuration in the following tables. Available keys are:
    --  - cmd (table): Override the default command used to start the server
    --  - filetypes (table): Override the default list of associated filetypes for the server
    --  - capabilities (table): Override fields in capabilities. Can be used to disable certain LSP features.
    --  - settings (table): Override the default settings passed when initializing the server.
    --        For example, to see the options for `lua_ls`, you could go to: https://luals.github.io/wiki/settings/
    local servers = {
      gopls = {},
      rust_analyzer = {},
      pyright = {},
      lua_ls = {
        -- cmd = {...},
        -- filetypes { ...},
        -- capabilities = {},
        settings = {
          Lua = {
            runtime = { version = 'LuaJIT' },
            workspace = {
              checkThirdParty = false,
              library = {
                '${3rd}/luv/library',
                unpack(vim.api.nvim_get_runtime_file('', true)),
              },
            },
            completion = {
              callSnippet = 'Replace',
            },
          },
        },
      },
    }

    require('mason').setup()

    -- You can add other tools here that you want Mason to install
    -- for you, so that they are available from within Neovim.
    local ensure_installed = vim.tbl_keys(servers or {})
    vim.list_extend(ensure_installed, {
      'stylua', -- Used to format lua code
    })
    require('mason-tool-installer').setup { ensure_installed = ensure_installed }

    require('mason-lspconfig').setup {
      handlers = {
        function(server_name)
          local server = servers[server_name] or {}
          server.capabilities = vim.tbl_deep_extend('force', {}, capabilities, server.capabilities or {})
          require('lspconfig')[server_name].setup(server)
        end,
      },
    }
  end,
}