Add default to "synopsis"

hamishmack · hamishmack · commit 66714f79155f · 2025-08-09T22:50:40.000+12:00
diff --git a/modules/package.nix b/modules/package.nix
@@ -77,6 +77,7 @@ in
 
       synopsis = lib.mkOption {
         type = types.str;
+        default = "";
       };
 
       description = lib.mkOption {
