nvim lazy plugin management part 2

.config/nvim/lua/user/plugins/lsp/diagnostics_config.lua

@@ -0,0 +1,30 @@
+local M = {}
+
+M.setup = function()
+	local config = {
+		virtual_text = true,
+		signs = {
+			text = {
+				[vim.diagnostic.severity.ERROR] = '',
+				[vim.diagnostic.severity.WARN] = '',
+				[vim.diagnostic.severity.HINT] = '',
+				[vim.diagnostic.severity.INFO] = '',
+			}
+		},
+		update_in_insert = true,
+		underline = true,
+		severity_sort = true,
+		float = {
+			focusable = true,
+			style = "minimal",
+			border = "rounded",
+			source = "always",
+			header = "",
+			prefix = "",
+		},
+	}
+
+	vim.diagnostic.config(config)
+end
+
+return M

.config/nvim/lua/user/plugins/lsp/init.lua

@@ -0,0 +1,34 @@
+return {
+	{
+		"williamboman/mason.nvim",
+		event = "VeryLazy",
+		config = true
+	}, -- simple to use language server installer
+	{
+		"williamboman/mason-lspconfig.nvim",
+		event = "VeryLazy",
+		config = function()
+			require("user.plugins.lsp.mason_lsp_config")
+			require("user.plugins.lsp.diagnostics_config").setup()
+			-- require("user.lsp.none_ls")
+
+			vim.cmd([[ command! Format execute 'lua vim.lsp.buf.format{async=true}' ]])
+		end
+	},
+	{ "neovim/nvim-lspconfig", event = "VeryLazy" }, -- enable LSP
+	{
+		"lukas-reineke/lsp-format.nvim",
+		event = "VeryLazy",
+		config = function()
+			local on_attach = function(client)
+				require("lsp-format").on_attach(client)
+			end
+
+			require("lspconfig").gopls.setup { on_attach = on_attach }
+		end
+	},
+	{
+		"nvimtools/none-ls.nvim",
+		event = "VeryLazy"
+	},
+}

.config/nvim/lua/user/plugins/lsp/mason_lsp_config.lua

@@ -0,0 +1,48 @@
+local mason_lspconfig = require("mason-lspconfig")
+
+vim.lsp.enable({
+	"omnisharp",
+	"pylsp",
+	"rust_analyzer",
+})
+
+-- TODO: this does not work, need to install pylsp-mypy plugin manually
+local function extra_args()
+	local virtual = os.getenv("VIRTUAL_ENV") or "/usr"
+	return { "--python-executable", virtual .. "/bin/python3", true }
+end
+
+vim.lsp.config('pylsp', {
+	settings = {
+		["pylsp"] = {
+			enabled = true,
+			plugins = {
+				pycodestyle = {
+					ignore = { "E501", "E231", "W503" },
+					maxLineLength = 100,
+				},
+				pyls_isort = { enabled = true },
+				pylsp_mypy = {
+					enabled = true,
+					-- this will make mypy to use the virtual environment
+					-- if not activated then it will use the system python(more specifically /usr/bin/python3)
+					overrides = extra_args(),
+					report_progress = true,
+					live_mode = true,
+				},
+			},
+		}
+	}
+})
+
+vim.lsp.config('rust_analyzer', {
+	settings = {
+		["rust-analyzer"] = {
+			cargo = {
+				features = "all",
+			},
+		},
+	}
+})
+
+mason_lspconfig.setup()

.config/nvim/lua/user/plugins/lsp/none_ls.lua

@@ -0,0 +1,25 @@
+local null_ls_status_ok, null_ls = pcall(require, "null-ls")
+if not null_ls_status_ok then
+	return
+end
+
+local formatting = null_ls.builtins.formatting
+local diagnostics = null_ls.builtins.diagnostics
+
+null_ls.builtins.diagnostics.mypy.with({
+	extra_args = function()
+		local virtual = os.getenv("VIRTUAL_ENV") or "/usr"
+		return { "--python-executable", virtual .. "/bin/python3" }
+	end,
+})
+
+null_ls.setup({
+	debug = false,
+	sources = {
+		-- formatting.prettier.with({ extra_args = { "--no-semi", "--single-quote", "--jsx-single-quote" } }),
+		-- formatting.black.with({ extra_args = { "--fast" } }),
+		-- formatting.isort,
+		formatting.stylua,
+		-- diagnostics.mypy,
+	},
+})