feat(nvim): rustfmt config

vim/lua/formatter_config.lua

@@ -1,6 +1,6 @@
 local prettier = function()
 	return {
-		exe = vim.fn.getcwd() .. "/node_modules/.bin/prettier",
+		exe = Get_project_node_modules_path() .. "/.bin/prettier",
 		args = { "--stdin-filepath", vim.api.nvim_buf_get_name(0), "--single-quote" },
 		stdin = true,
 	}
@@ -22,6 +22,14 @@ local goimports = function()
 	}
 end
 
+local rustfmt = function()
+	return {
+		exe = "rustfmt",
+		args = { "--edition", "2021" },
+		stdin = true,
+	}
+end
+
 require("formatter").setup({
 	log_level = vim.log.levels.INFO,
 	filetype = {
@@ -29,6 +37,7 @@ require("formatter").setup({
 		typescript = { prettier },
 		typescriptreact = { prettier },
 		go = { goimports },
+		rust = { rustfmt },
 
 		-- https://github.com/JohnnyMorganz/StyLua
 		-- cargo install stylua --features lua54
@@ -43,7 +52,7 @@ vim.api.nvim_exec2(
 	[[
 augroup FormatAutogroup
   autocmd!
-  autocmd BufWritePost *.js,*.ts,*.tsx,*.go,*.lua silent FormatWrite
+  autocmd BufWritePost *.js,*.ts,*.tsx,*.go,*.lua,*.rs silent FormatWrite
 augroup END
 ]],
 	{ output = true }

vim/lua/helpers.lua

@@ -1,3 +1,16 @@
+-- Return the node_modules path for this project. If the project root contains a
+-- frontend/ directory, assume node_modules lives there.
+function Get_project_node_modules_path()
+	local root_path = vim.fn.getcwd()
+	local frontend_path = root_path .. "/frontend"
+	local is_frontend = vim.fn.isdirectory(frontend_path) ~= 0
+	local base_path = root_path
+	if is_frontend then
+		base_path = frontend_path
+	end
+	return base_path .. "/node_modules"
+end
+
 -- Return the project's go module path from go.mod, or an empty string if the file cannot be read.
 function Get_project_go_module_path()
 	local root_path = vim.fn.getcwd()

vim/lua/lsp_config.lua

@@ -41,7 +41,7 @@ end
 -- Go
 
 local capabilities = require("cmp_nvim_lsp").default_capabilities()
-capabilities.textDocument.completion.completionItem.snippetSupport = true
+capabilities.textDocument.completion.completionItem.snippetSupport = false
 capabilities.textDocument.completion.completionItem.resolveSupport = {
 	properties = {
 		"documentation",