[fix] template haskell is too new

Author: MangoIV

flake.nix

@@ -77,7 +77,7 @@
         # needed to avoid IFD
         mkOpaque = x: nlib.mkOverride 100 (nlib.mkOrder 1000 x);
 
-        default-ghc = "ghc925";
+        default-ghc = "ghc924";
 
         inherit (flake-parts.lib) mkFlake;
         hci-module = hci-effects.flakeModule;