Use GHC 9.6.6

hamishmack · hamishmack · commit 985efa88693a · 2024-12-11T23:43:42.000+13:00
diff --git a/nix-tools/cabal.project b/nix-tools/cabal.project
@@ -1,4 +1,4 @@
-index-state: 2024-12-11T00:00:00Z
+index-state: 2024-12-10T00:00:00Z
 
 packages: nix-tools
 
diff --git a/nix-tools/static/project.nix b/nix-tools/static/project.nix
@@ -64,7 +64,7 @@ let
 
   static-nix-tools-project = pkgs.haskell-nix.project' {
 
-    compiler-nix-name = "ghc928";
+    compiler-nix-name = "ghc966";
 
     src = ../.;
 
