nixpkgs/neovim: disable fuzzy matching

.config/nixpkgs/neovim/plugins.lua

@@ -189,6 +189,7 @@ cmp.setup({
   },
   matching = {
     -- disable non-prefix matching
+    disallow_fuzzy_matching = true,
     disallow_partial_matching = true,
     disallow_prefix_unmatching = true,
   },