fix(lazy): validate lazy is able to be loaded

lua/config/lazy.lua

@@ -1,12 +1,20 @@
-local lazypath = vim.fn.stdpath "data" .. "/lazy/lazy.nvim"
-if not vim.loop.fs_stat(lazypath) then
+local lazypath = vim.env.LAZY or vim.fn.stdpath "data" .. "/lazy/lazy.nvim"
+if not (vim.env.LAZY or vim.loop.fs_stat(lazypath)) then
   vim.g.astronvim_first_install = true -- lets AstroNvim know that this is an initial installation
   -- stylua: ignore
   vim.fn.system({ "git", "clone", "--filter=blob:none", "https://github.com/folke/lazy.nvim.git", "--branch=stable", lazypath })
 end
-vim.opt.rtp:prepend(vim.env.LAZY or lazypath)
+vim.opt.rtp:prepend(lazypath)
 
-require("lazy").setup {
+local lazy_loaded, lazy = pcall(require, "lazy") -- validate that lazy is available
+if not lazy_loaded then
+  -- stylua: ignore
+  vim.api.nvim_echo({ { ("Unable to load lazy from: %s\n"):format(lazypath), "ErrorMsg" }, { "Press any key to exit...", "MoreMsg" } }, true, {})
+  vim.fn.getchar()
+  vim.cmd.quit()
+end
+
+lazy.setup {
   spec = {
     -- TODO: change `branch="v4"` to `version="^4"` on release
     { "AstroNvim/AstroNvim", branch = "v4", import = "astronvim.plugins" },