diff --git a/nix/default.nix b/nix/default.nix
index 5311d174ff5..ef7ccac1fb4 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -86,7 +86,14 @@ in (import sources.nixpkgs
       # default_stages = ["manual" "push"];
       hooks = {
         stylish-haskell.enable = true;
-        stylish-haskell.excludes = [ "^Setup.hs$" "test/testdata/.*$" "test/data/.*$" "^hie-compat/.*$" "^plugins/hls-tactics-plugin/.*$" ];
+        stylish-haskell.excludes = [
+          # Ignored files
+          "^Setup.hs$" "test/testdata/.*$" "test/data/.*$" "test/manual/lhs/.*$" "^hie-compat/.*$" "^plugins/hls-tactics-plugin/.*$"
+
+          # Temporarily ignored files
+          # Stylish-haskell (and other formatters) does not work well with some CPP usages in these files
+          "^ghcide/src/Development/IDE/GHC/Compat.hs$" "plugins/hls-splice-plugin/src/Ide/Plugin/Splice.hs" "ghcide/test/exe/Main.hs" "ghcide/src/Development/IDE/Core/Rules.hs" "hls-test-utils/src/Test/Hls/Util.hs"
+        ];
       };
     };
   }