chore: organize dotfiles stowed by home-manager

modules/dotfiles/nvim/lua/thegeneralist/lazy/nullls.lua

@@ -0,0 +1,51 @@
+--[[
+These three tabs are necessary when dealing with this nonsense:
+- https://github.com/jose-elias-alvarez/null-ls.nvim/blob/main/doc/BUILTIN_CONFIG.md#arguments
+- https://github.com/jay-babu/mason-null-ls.nvim
+- https://github.com/nvimtools/none-ls.nvim
+--]]
+return {
+	"jay-babu/mason-null-ls.nvim",
+	event = { "BufReadPre", "BufNewFile" },
+	dependencies = {
+		"williamboman/mason.nvim",
+		"nvimtools/none-ls.nvim",
+		"nvimtools/none-ls-extras.nvim",
+	},
+	config = function()
+		local null_ls = require("null-ls")
+		require("mason-null-ls").setup({
+			ensure_installed = {
+				"stylua",
+				"jq",
+				"mypy",
+				"ruff",
+				"black",
+			},
+			handlers = {
+				["mypy"] = function(source_name, methods)
+					local options = {
+						extra_args = function()
+							local command = "which python"
+							local handle = io.popen(command)
+              local python_path = ""
+              if handle then
+                python_path = handle:read("*a")
+                python_path = string.gsub(python_path, "\n", "")
+                handle:close()
+              end
+							return { "--python-executable", python_path }
+						end,
+					}
+					null_ls.register(null_ls.builtins.diagnostics.mypy.with(options))
+				end,
+				--[[ ["ruff"] = function(source_name, methods)
+          null_ls.register(null_ls.builtins.diagnostics.ruff)
+          --require('mason-null-ls').default_setup(source_name, methods) -- to maintain default behavior
+        end, ]]
+			},
+		})
+
+		null_ls.setup()
+	end,
+}