Zubin The accepted GHC proposal 732: Simplify static forms https://github.com/ghc-proposals/ghc-proposals/pull/732 needs a deprecation warning added to GHC 9.14, to warn about static forms that mention nested free variables. Ticket #26718 https://gitlab.haskell.org/ghc/ghc/-/issues/26718 tracks the warning. I have implemented that warning in branch wip/T26178 in the main GHC repo. It's based on the ghc-9.14 branch. I'm not sure how to run CI on it. Can I hand it off to you now? It should be part of the 9.14.2 release as agreed by the GHC steering committee. RSVP Thanks Simon