diff --git a/pkgs/by-name/ha/handheld-daemon/package.nix b/pkgs/by-name/ha/handheld-daemon/package.nix
index 5087698c7934..52b5729bc6f3 100644
--- a/pkgs/by-name/ha/handheld-daemon/package.nix
+++ b/pkgs/by-name/ha/handheld-daemon/package.nix
@@ -1,10 +1,11 @@
-{ config
-, fetchFromGitHub
-, hidapi
-, kmod
-, lib
-, python3
-, toybox
+{
+  config,
+  fetchFromGitHub,
+  hidapi,
+  kmod,
+  lib,
+  python3,
+  toybox,
 }:
 python3.pkgs.buildPythonApplication rec {
   pname = "handheld-daemon";
@@ -35,12 +36,12 @@ python3.pkgs.buildPythonApplication rec {
   postPatch = ''
     # handheld-daemon contains a fork of the python module `hid`, so this hook
     # is borrowed from the `hid` derivation.
-    hidapi=${ hidapi }/lib/
+    hidapi=${hidapi}/lib/
     test -d $hidapi || { echo "ERROR: $hidapi doesn't exist, please update/fix this build expression."; exit 1; }
     sed -i -e "s|libhidapi|$hidapi/libhidapi|" src/hhd/controller/lib/hid.py
 
     # The generated udev rules point to /bin/chmod, which does not exist in NixOS
-    chmod=${ toybox }/bin/chmod
+    chmod=${toybox}/bin/chmod
     sed -i -e "s|/bin/chmod|$chmod|" src/hhd/controller/lib/hide.py
   '';