haskellPackages.monad-validate: append patch

pkgs/development/haskell-modules/configuration-common.nix

@@ -629,6 +629,12 @@ self: super: {
   # 2022-03-19: Testsuite is failing: https://github.com/puffnfresh/haskell-jwt/issues/2
   jwt = dontCheck super.jwt;
 
+  # 2022-03-16: ghc 9 support has not been merged: https://github.com/hasura/monad-validate/pull/5
+  monad-validate = appendPatch (pkgs.fetchpatch {
+    url = "https://github.com/hasura/monad-validate/commit/7ba916e23c219a8cd397e2a1801c74682b52fcf0.patch";
+    sha256 = "sha256-udJ+/2VvfWA5Bm36nftH0sbPNuMkWj8rCh9cNN2f9Zw=";
+  }) (dontCheck super.monad-validate);
+
   # Build the latest git version instead of the official release. This isn't
   # ideal, but Chris doesn't seem to make official releases any more.
   structured-haskell-mode = overrideCabal (drv: {