diff --git a/flake.nix b/flake.nix
index 48ff8505c..f22ccde11 100644
--- a/flake.nix
+++ b/flake.nix
@@ -331,6 +331,10 @@
               stages = [ "commit" ];
               excludes = [ "^tests/functional/lang/" ];
             };
+            treefmt = {
+              enable = true;
+              settings.formatters = [ ];
+            };
           };
         }) pre-commit-hooks.lib;
       };
diff --git a/treefmt.toml b/treefmt.toml
new file mode 100644
index 000000000..81df72cc2
--- /dev/null
+++ b/treefmt.toml
@@ -0,0 +1 @@
+[formatter]