nvim-treesitter: ensure installed rust

lua/plugins/init.lua

@@ -140,7 +140,15 @@ return {
     "nvie/vim-flake8",
     "https://gitlab.com/HiPhish/pycodestyle.nvim",
     "nvim-lua/plenary.nvim",
+    {
         "nvim-treesitter/nvim-treesitter",
+        init = function ()
+            require'nvim-treesitter.configs'.setup {
+                -- A list of parser names, or "all" (the listed parsers MUST always be installed)
+                ensure_installed = {"rust"},
+            }
+        end
+    },
     "antoinemadec/FixCursorHold.nvim",
     "nvim-neotest/neotest",
     -- "nvim-lua/completion-nvim",