From d311ebb152ca3ee26aba340f97048a33dd0997ad Mon Sep 17 00:00:00 2001
From: "Alexander \"PapaTutuWawa" <papatutuwawa@polynom.me>
Date: Sat, 4 Sep 2021 19:26:38 +0200
Subject: [PATCH] surface-control: Fix udev rule

---
 .../tools/system/surface-control/0000-nixos-chmod.patch  | 9 +++++++++
 packages/tools/system/surface-control/default.nix        | 5 ++++-
 2 files changed, 13 insertions(+), 1 deletion(-)
 create mode 100644 packages/tools/system/surface-control/0000-nixos-chmod.patch

diff --git a/packages/tools/system/surface-control/0000-nixos-chmod.patch b/packages/tools/system/surface-control/0000-nixos-chmod.patch
new file mode 100644
index 0000000..e4df368
--- /dev/null
+++ b/packages/tools/system/surface-control/0000-nixos-chmod.patch
@@ -0,0 +1,9 @@
+diff --git a/etc/udev/40-surface-control.rules b/etc/udev/40-surface-control.rules
+index db90d63..f5857c8 100644
+--- a/etc/udev/40-surface-control.rules
++++ b/etc/udev/40-surface-control.rules
+@@ -1,2 +1,2 @@
+-KERNEL=="01:03:01:00:01", SUBSYSTEM=="surface_aggregator", RUN+="/usr/bin/chmod 664 /sys/bus/surface_aggregator/devices/01:03:01:00:01/perf_mode"
+-KERNEL=="01:03:01:00:01", SUBSYSTEM=="surface_aggregator", RUN+="/usr/bin/chown root:surface-control /sys/bus/surface_aggregator/devices/01:03:01:00:01/perf_mode"
++KERNEL=="01:03:01:00:01", SUBSYSTEM=="surface_aggregator", RUN+="@CHMODBINARY@ 664 /sys/bus/surface_aggregator/devices/01:03:01:00:01/perf_mode"
++KERNEL=="01:03:01:00:01", SUBSYSTEM=="surface_aggregator", RUN+="@CHMODBINARY@ root:surface-control /sys/bus/surface_aggregator/devices/01:03:01:00:01/perf_mode"
diff --git a/packages/tools/system/surface-control/default.nix b/packages/tools/system/surface-control/default.nix
index dc12b73..878f18d 100644
--- a/packages/tools/system/surface-control/default.nix
+++ b/packages/tools/system/surface-control/default.nix
@@ -1,7 +1,7 @@
 {
   lib
 , fetchFromGitHub
-, rustPlatform
+, rustPlatform, coreutils
 , pkg-config, udev
 }:
 
@@ -16,6 +16,8 @@ rustPlatform.buildRustPackage rec {
     sha256 = "0606imcz38kcfxcjs00j3va7j7i8fzr4mcspyh5d6jrwwgl1xjxb";
   };
 
+  patches = [ ./0000-nixos-chmod.patch ];
+
   cargoSha256 = "1yqwaba1rkm3kw1py87j23q4jbdhdsx6fmqidzxgqhr7awrq763y";
 
   nativeBuildInputs = [ pkg-config ];
@@ -24,6 +26,7 @@ rustPlatform.buildRustPackage rec {
   postInstall = ''
     mkdir -p $out/lib/udev/rules.d/
     cp etc/udev/40-surface-control.rules $out/lib/udev/rules.d/40-surface-control.rules
+    sed -e "s|@CHMODBINARY@|${coreutils}/bin/chmod|g" --in-place $out/lib/udev/rules.d/40-surface-control.rules
   '';
 
   doCheck = false;