Add tentative FeatureNew guard
@@ -928,6 +928,7 @@ The result of this is undefined and will become a hard error in a future Meson r
else:
return self.evaluate_statement(node.falseblock)
+ @FeatureNew('format strings', '0.58.0')
def evaluate_fstring(self, node: mparser.FormatStringNode) -> TYPE_var:
assert(isinstance(node, mparser.FormatStringNode))
