@@ -660,6 +660,9 @@ packages:
660660 # for language-ecmascript as well.
661661 - language-ecmascript < 0.17
662662
663+ # https://github.com/fpco/stackage/issues/398
664+ - monoid-subclasses < 0.4
665+
663666# Package flags are applied to individual packages, and override the values of
664667# global-flags
665668package-flags: