Flake: add nixpkgs patches

nixpkgs-patches/0001-Revert-handheld-daemon-undo-refactor.patch

@@ -0,0 +1,40 @@
+From 904067bc281924e86e936c7d0162131e8af86d64 Mon Sep 17 00:00:00 2001
+From: Toast <39011842+toast003@users.noreply.github.com>
+Date: Mon, 6 May 2024 12:26:54 +0200
+Subject: [PATCH 1/1] Revert "handheld-daemon: undo refactor"
+
+This reverts commit d9b487ae609a368378c1a9d89a5441c5c44121df.
+---
+ pkgs/by-name/ha/handheld-daemon/package.nix | 12 +++++++-----
+ 1 file changed, 7 insertions(+), 5 deletions(-)
+
+diff --git a/pkgs/by-name/ha/handheld-daemon/package.nix b/pkgs/by-name/ha/handheld-daemon/package.nix
+index 246e3879bb5c..ad0554bec36d 100644
+--- a/pkgs/by-name/ha/handheld-daemon/package.nix
++++ b/pkgs/by-name/ha/handheld-daemon/package.nix
+@@ -34,15 +34,17 @@ python3.pkgs.buildPythonApplication rec {
+   doCheck = false;
+ 
+   postPatch = ''
++    # The generated udev rules point to /bin/chmod, which does not exist in NixOS
++    substituteInPlace src/hhd/controller/lib/hide.py \
++      --replace-fail /bin/chmod ${toybox}/bin/chmod
++
+     # handheld-daemon contains a fork of the python module `hid`, so this hook
+     # is borrowed from the `hid` derivation.
++    substituteInPlace src/hhd/controller/lib/hid.py \
++      --replace-fail libhidapi ${hidapi}/lib/libhidapi
++
+     hidapi=${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=${toybox}/bin/chmod
+-    sed -i -e "s|/bin/chmod|$chmod|" src/hhd/controller/lib/hide.py
+   '';
+ 
+   postInstall = ''
+-- 
+2.44.0
+