modules/plugins/completion/nvim-cmp/config.nix

@@ -60,6 +60,12 @@ in {
         enableSharedCmpSources = true;
 
         nvim-cmp = {
+          sources = {
+            nvim-cmp = null;
+            buffer = "[Buffer]";
+            path = "[Path]";
+          };
+
           sourcePlugins = ["cmp-buffer" "cmp-path"];
 
           setupOpts = {

modules/plugins/completion/nvim-cmp/nvim-cmp.nix

@@ -98,16 +98,14 @@ in {
 
     sources = mkOption {
       type = attrsOf (nullOr str);
-      default = {
+      default = {};
-        nvim-cmp = null;
-        buffer = "[Buffer]";
-        path = "[Path]";
-      };
-      example = {
-        nvim-cmp = null;
-        buffer = "[Buffer]";
-      };
       description = "The list of sources used by nvim-cmp";
+      example = literalExpression ''
+        {
+          nvim-cmp = null;
+          buffer = "[Buffer]";
+        }
+      '';
     };
 
     sourcePlugins = mkOption {