Use null-ls and mason

lua/mappings.lua

@@ -48,7 +48,7 @@ map('', '<leader>tt', ':TagbarToggle<cr>', {silent = true})
 map('', '<C-n>', ':NvimTreeToggle<cr>', { silent = true })
 
 -- toggle formatter
-map('', '<leader>fm', ':Neoformat<cr>', {silent = true})
+map('', '<leader>fm', ':lua vim.lsp.buf.formatting()<cr>', { silent = true })
 
 -- toggle Hop
 map('', '<leader>b', ':HopWordBC<cr>', { silent = true })
@@ -56,5 +56,8 @@ map('', '<leader>w', ':HopWordAC<cr>', {silent = true})
 map('', '<leader>l', ':HopWordCurrentLine<cr>', { silent = true })
 
 -- telescope stuff
-map('', '<leader>fd', ':Telescope fd<cr>', {silent = true})
+map('', '<leader>fd', ':Telescope fd<cr>',
+
+
+	{ silent = true })
 map('', '<leader>tb', ':Telescope buffers<cr>', { silent = true })

lua/plugins.lua

@@ -26,16 +26,16 @@ return require('packer').startup(function(use)
 	-- }
 
 	-- lsp stuff
-    use {'neovim/nvim-lspconfig', event = 'UIEnter'}
 	use {
-        'williamboman/nvim-lsp-installer',
+		'neovim/nvim-lspconfig',
-        after = 'nvim-lspconfig',
+		after = "mason-lspconfig.nvim",
-        config = function() require 'plugins.lspinstall' end
+		config = function() require 'plugins.lsp' end
 	}
-    use {'hrsh7th/cmp-nvim-lsp', after = 'nvim-lsp-installer'}
+	use { 'williamboman/mason-lspconfig.nvim', after = 'mason.nvim' }
+	use { 'hrsh7th/cmp-nvim-lsp', after = 'nvim-lspconfig' }
 	use {
 		'ray-x/lsp_signature.nvim',
-        after = 'nvim-lsp-installer',
+		after = 'nvim-lspconfig',
 		config = function() require 'plugins.lsp-signature' end
 	}
 
@@ -72,12 +72,20 @@ return require('packer').startup(function(use)
 	}
 
 	-- formating and editing
+	use { "williamboman/mason.nvim", event = "UIEnter" }
 	use {
 		'windwp/nvim-autopairs',
 		after = 'nvim-cmp',
 		config = function() require('plugins.nvim-autopairs') end
 	}
-    use {'sbdchd/neoformat', cmd = 'Neoformat'}
+	use {
+		"jose-elias-alvarez/null-ls.nvim",
+		config = function()
+			require('plugins.null-ls')
+		end,
+		requires = { "nvim-lua/plenary.nvim" },
+		event = "CmdlineEnter"
+	}
 	use {
 		'mattn/emmet-vim',
 		ft = { 'html', 'htmldjango', 'css', 'markdown' },

lua/plugins/lsp.lua

@@ -0,0 +1,15 @@
+require("mason").setup {ui = {icons = {package_installed = "✓"}}}
+require("mason-lspconfig").setup {ensure_installed = {"sumneko_lua"}}
+-- Dynamic loading of lsp servers
+require("mason-lspconfig").setup_handlers {
+    -- The first entry (without a key) will be the default handler
+    -- and will be called for each installed server that doesn't have
+    -- a dedicated handler.
+    function(server_name) -- default handler (optional)
+        require("lspconfig")[server_name].setup {}
+    end,
+    -- Next, you can provide targeted overrides for specific servers.
+    -- For example, a handler override for the `rust_analyzer`:
+    ["rust_analyzer"] = function() require("rust-tools").setup {} end
+}
+

lua/plugins/lspinstall.lua

@@ -1,17 +0,0 @@
-local lsp_installer = require("nvim-lsp-installer")
-
--- Register a handler that will be called for all installed servers.
--- Alternatively, you may also register handlers on specific server instances instead (see example below).
-lsp_installer.on_server_ready(function(server)
-    local opts = {}
-
-    -- (optional) Customize the options passed to the server
-    -- if server.name == "tsserver" then
-    --     opts.root_dir = function() ... end
-    -- end
-
-    -- This setup() function is exactly the same as lspconfig's setup function.
-    -- Refer to https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md
-    server:setup(opts)
-end)
-

lua/plugins/null-ls.lua

@@ -0,0 +1,18 @@
+local null_ls = require("null-ls")
+
+-- builtins
+-- local code_actions = null_ls.builtins.code_actions
+local diagnostics = null_ls.builtins.diagnostics
+local formatting = null_ls.builtins.formatting
+local hover = null_ls.builtins.hover
+local completion = null_ls.builtins.completion
+
+local sources = {
+	code_actions,
+	diagnostics,
+	formatting,
+	hover,
+	completion
+}
+
+null_ls.setup({ sources = sources })