diff --git a/common/tooling/default.nix b/common/tooling/default.nix
index cf577ce..ea92411 100644
--- a/common/tooling/default.nix
+++ b/common/tooling/default.nix
@@ -36,6 +36,7 @@ in
         (writeShellScriptBin "silent-add" "git add --intent-to-add $@ ; git update-index --assume-unchanged $@")
 
         urlencode
+        rfindup
         pstree
         file
         wget
diff --git a/common/tooling/lsp.nix b/common/tooling/lsp.nix
index 179fc97..fb65e1f 100644
--- a/common/tooling/lsp.nix
+++ b/common/tooling/lsp.nix
@@ -32,6 +32,8 @@ let
   treefmt_conf = pkgs.writeText "treefmt.toml" (
     concatLines (map (v: (conf_def v.fmt)) (filter (v: !isNull v.fmt) tooling.lang_servers))
   );
+
+  find_conf = pkgs.writeShellScriptBin "find-treefmt-conf" "(${getExe pkgs.rfindup} treefmt.toml -e 2>/dev/null || echo ${treefmt_conf}) | tr -d '\n'";
 in
 {
   config = mkIf (enable && tooling.enable) {
@@ -44,7 +46,8 @@ in
       ++ (map (v: v.lsp.package) (filter (v: !isNull v.lsp) tooling.lang_servers))
       ++ (map (v: v.fmt.package) (filter (v: !isNull v.fmt) tooling.lang_servers));
 
-    environment.shellAliases."treefmt" = "${getExe pkgs.treefmt} --config-file ${treefmt_conf}";
+    #    environment.shellAliases."treefmt" = "${getExe pkgs.treefmt} --config-file ${treefmt_conf}";
+    environment.shellAliases."treefmt" = "${getExe pkgs.treefmt} --config-file $(${getExe find_conf})";
 
     grimmShared.tooling.nvim.extraLuaRC =
       [ "vim.g.coq_settings = { auto_start = 'shut-up' }" ]
diff --git a/common/xdg/portals.nix b/common/xdg/portals.nix
index 18d349d..20b1d01 100644
--- a/common/xdg/portals.nix
+++ b/common/xdg/portals.nix
@@ -52,7 +52,10 @@ in
       XDG_CONFIG_HOME = "$HOME/.config";
     };
 
-    environment.systemPackages = with pkgs; [ xwaylandvideobridge ];
+    environment.systemPackages = with pkgs; [
+      xwaylandvideobridge
+      confwhich
+    ];
   };
 
   options.grimmShared.portals = mkEnableOption "Enables portals for wlr, gtk and kde as well as fixes fonts";
diff --git a/custom/confwhich/package.nix b/custom/confwhich/package.nix
new file mode 100644
index 0000000..3f39c58
--- /dev/null
+++ b/custom/confwhich/package.nix
@@ -0,0 +1,28 @@
+{
+  lib,
+  rustPlatform,
+  fetchFromGitea,
+}:
+rustPlatform.buildRustPackage {
+  pname = "confwhich";
+  version = "unstable-2024-05-14";
+
+  src = fetchFromGitea {
+    domain = "git.grimmauld.de";
+    owner = "Grimmauld";
+    repo = "confwhich";
+    rev = "e561b82d1e2b0d0998ccbef316014297f3468fb6";
+    hash = "sha256-dMkUJMQjlKzmSsgtH0xOZ5Bk654+h84M1cTx8hVM5SQ=";
+  };
+
+  cargoHash = "sha256-cn9vtRO+negpIVs0rnp2y5q7L4w554dfBK9MtbWd8FA=";
+
+  meta = {
+    description = "tool to find the path of xdg config files";
+    homepage = "https://git.grimmauld.de/Grimmauld/confwhich";
+    license = lib.licenses.bsd3;
+    mainProgram = "confwhich";
+    maintainers = with lib.maintainers; [ grimmauld ];
+    platforms = lib.platforms.linux;
+  };
+}
diff --git a/custom/rfindup/package.nix b/custom/rfindup/package.nix
new file mode 100644
index 0000000..0a39f61
--- /dev/null
+++ b/custom/rfindup/package.nix
@@ -0,0 +1,28 @@
+{
+  lib,
+  rustPlatform,
+  fetchFromGitea,
+}:
+rustPlatform.buildRustPackage {
+  pname = "rfindup";
+  version = "unstable-2024-05-16";
+
+  src = fetchFromGitea {
+    domain = "git.grimmauld.de";
+    owner = "Grimmauld";
+    repo = "rfindup";
+    rev = "fe2c39e74c667593896ce03033cccdffda6b288d";
+    hash = "sha256-N23sKOfir07WIFbjdHNku7nLTtRd7A5tfs7kvdeCyeU=";
+  };
+
+  cargoHash = "sha256-MD7ViPWkL/aYECWj1f+NdVrPVwwFTd8GyyKSUUgXXHE=";
+
+  meta = {
+    description = "tool to find files by name in parent directories";
+    homepage = "https://git.grimmauld.de/Grimmauld/rfindup";
+    license = lib.licenses.bsd3;
+    mainProgram = "rfindup";
+    maintainers = with lib.maintainers; [ grimmauld ];
+    platforms = lib.platforms.linux;
+  };
+}
diff --git a/fake_flake.nix b/fake_flake.nix
index ac82abb..6b88203 100644
--- a/fake_flake.nix
+++ b/fake_flake.nix
@@ -31,7 +31,7 @@ let
     {
       # xonsh update
       url = "https://patch-diff.githubusercontent.com/raw/NixOS/nixpkgs/pull/305316.patch";
-      hash = "sha256-/OSbAur16Q1XZ/Nhf8VAzaQ3gqbaxWkQlf5G4UWKnh8=";
+      hash = "sha256-W3jh6qRA/7V1fImLm3vRmaT6h6gL5rlNBUuIidZHaZc=";
     }
   ];
 
diff --git a/overlays/confwhich.nix b/overlays/confwhich.nix
new file mode 100644
index 0000000..04a8af6
--- /dev/null
+++ b/overlays/confwhich.nix
@@ -0,0 +1,4 @@
+{ prev, ... }:
+{
+  confwhich = prev.callPackage ../custom/confwhich/package.nix { };
+}
diff --git a/overlays/default.nix b/overlays/default.nix
index c190969..f3695c4 100644
--- a/overlays/default.nix
+++ b/overlays/default.nix
@@ -28,5 +28,7 @@
         ./mcontrolcenter.nix
         ./ccache-wrapper.nix
         ./searchclip.nix
+        ./confwhich.nix
+        ./rfindup.nix
       ];
 }
diff --git a/overlays/rfindup.nix b/overlays/rfindup.nix
new file mode 100644
index 0000000..d8bf2ad
--- /dev/null
+++ b/overlays/rfindup.nix
@@ -0,0 +1,4 @@
+{ prev, ... }:
+{
+  rfindup = prev.callPackage ../custom/rfindup/package.nix { };
+}