nvim/lua/plugins/lsp.lua

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, mode)
      mode = mode or 'n'
      vim.keymap.set(mode, keys, func, { buffer = event.buf, desc = 'LSP: ' .. desc })
    end

    map('<leader>D', require('telescope.builtin').lsp_type_definitions, 'Type [D]efinition')
    map('<leader>ca', vim.lsp.buf.code_action, '[C]ode [A]ction', { 'n', 'x' })
    map('<leader>ds', require('telescope.builtin').lsp_document_symbols, '[D]ocument [S]ymbols')
    map('<leader>rn', vim.lsp.buf.rename, '[R]e[n]ame')
    map('<leader>ws', require('telescope.builtin').lsp_dynamic_workspace_symbols, '[W]orkspace [S]ymbols')
    map('gD', vim.lsp.buf.declaration, '[G]oto [D]eclaration')
    map('gI', require('telescope.builtin').lsp_implementations, '[G]oto [I]mplementation')
    map('gd', require('telescope.builtin').lsp_definitions, '[G]oto [D]efinition')
    map('gr', require('telescope.builtin').lsp_references, '[G]oto [R]eferences')

    local delayed_format = function()
      vim.lsp.buf.format { timeout_ms = 2000 }
    end

    map('<leader>ff', delayed_format, '[F]ormat')
    --
    -- -- See `:help K` for why this keymap
    -- nmap('K', vim.lsp.buf.hover, 'Hover Documentation')
    -- nmap('<C-k>', vim.lsp.buf.signature_help, 'Signature Documentation')

    local client = vim.lsp.get_client_by_id(event.data.client_id)
    if client and client.supports_method(vim.lsp.protocol.Methods.textDocument_documentHighlight) then
      local highlight_augroup = vim.api.nvim_create_augroup('kickstart-lsp-highlight', { clear = false })
      vim.api.nvim_create_autocmd({ 'CursorHold', 'CursorHoldI' }, {
        buffer = event.buf,
        group = highlight_augroup,
        callback = vim.lsp.buf.document_highlight,
      })

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

      vim.api.nvim_create_autocmd('LspDetach', {
        group = vim.api.nvim_create_augroup('kickstart-lsp-detach', { clear = true }),
        callback = function(event2)
          vim.lsp.buf.clear_references()
          vim.api.nvim_clear_autocmds { group = 'kickstart-lsp-highlight', buffer = event2.buf }
        end,
      })
    end

    if client and client.supports_method(vim.lsp.protocol.Methods.textDocument_inlayHint) then
      map('<leader>th', function()
        vim.lsp.inlay_hint.enable(not vim.lsp.inlay_hint.is_enabled { bufnr = event.buf })
      end, '[T]oggle Inlay [H]ints')
    end
  end,
})

return {
  {
    -- LSP Configuration & Plugins
    'neovim/nvim-lspconfig',
    dependencies = {

      -- Automatically install LSPs and related tools to stdpath for Neovim
      { 'williamboman/mason.nvim', config = true }, -- NOTE: Must be loaded before dependants
      'williamboman/mason-lspconfig.nvim',
      'WhoIsSethDaniel/mason-tool-installer.nvim',

      -- Useful status updates for LSP.
      { 'j-hui/fidget.nvim', opts = {} },

      -- Allows extra capabilities provided by nvim-cmp
      'hrsh7th/cmp-nvim-lsp',

      {
        'mrcjkb/rustaceanvim',
        version = '^4',
        ft = { 'rust' },
      },

      {
        -- `lazydev` configures Lua LSP for your Neovim config, runtime and plugins
        -- used for completion, annotations and signatures of Neovim apis
        'folke/lazydev.nvim',
        ft = 'lua',
        opts = {
          library = {
            -- Load luvit types when the `vim.uv` word is found
            { path = 'luvit-meta/library', words = { 'vim%.uv' } },
          },
        },
      },
      { 'Bilal2453/luvit-meta', lazy = true },
    },
    config = function()
      local servers = {
        clangd = {},
        marksman = {},
        gopls = {},
        ruff = {},
        pyright = {
          pyright = {
            disableOrganizeImports = true,
          },
        },
        ts_ls = {},
        lua_ls = {
          Lua = {
            workspace = { checkThirdParty = false },
            telemetry = { enable = false },
          },
        },
        stylua = {},
      }

      local capabilities = vim.lsp.protocol.make_client_capabilities()
      capabilities = vim.tbl_deep_extend('force', capabilities, require('cmp_nvim_lsp').default_capabilities())

      -- Setup mason so it can manage external tooling
      require('mason').setup()

      -- Ensure the servers above are installed
      require('mason-tool-installer').setup { ensure_installed = vim.tbl_keys(servers) }

      require('mason-lspconfig').setup {
        handlers = {
          function(server_name)
            local server = servers[server_name] or {}
            -- This handles overriding only values explicitly passed
            -- by the server configuration above. Useful when disabling
            -- certain features of an LSP (for example, turning off formatting for ts_ls)
            server.capabilities = vim.tbl_deep_extend('force', {}, capabilities, server.capabilities or {})
            require('lspconfig')[server_name].setup(server)
          end,
        },
      }

      vim.g.rustaceanvim = {
        tools = {
          inlay_hints = {
            auto = false,
          },
        },
        server = {
          settings = {
            ['rust-analyzer'] = {
              cargo = {
                -- always enable all features
                features = 'all',
              },
              -- use clippy on save
              checkOnSave = {
                command = 'clippy',
              },
              -- leave rainbow higlight to plugin
              rainbowHighlightOn = false,
              useLibraryCodeForTypes = true,
              autoSearchPaths = true,
              autoImportCompletions = false,
              reportMissingImports = true,
              followImportForHints = true,
            },
          },
        },
      }
    end,
  },
}