deskpi (rpi4b case)

raspberry-pi/packages/deskpi-tools/default.nix

@@ -0,0 +1,48 @@
+{
+  lib,
+  stdenv,
+  pkgs,
+  fetchFromGitHub,
+  gcc,
+  device ? "/dev/deskPi",
+  ...
+}: let
+  pname = "deskpi-tools";
+  version = "current-20240723";
+
+  src = fetchFromGitHub {
+    owner = "DeskPi-Team";
+    repo = "deskpi";
+    rev = "e421d1e6bd9afb545b6bbfc6b30e306975e77e44";
+    hash = "sha256-cetBXTqe8zZXpn5jjZ/g61j9y39exKWIvJH9IMgJj5c=";
+  };
+in
+  stdenv.mkDerivation rec {
+    inherit pname version src;
+
+    nativeBuildInputs = [gcc];
+    dontConfigure = true;
+
+    postPatch = ''
+      substituteInPlace installation/drivers/c/pwmFanControl.c --replace '/dev/ttyUSB0' '${device}'
+      substituteInPlace installation/drivers/c/pwmFanControl.c --replace 'conf_info[1]=75' 'conf_info[1]=0'
+      substituteInPlace installation/drivers/c/pwmFanControl.c --replace 'conf_info[3]=75' 'conf_info[3]=50'
+      substituteInPlace installation/drivers/c/pwmFanControl.c --replace 'conf_info[5]=100' 'conf_info[5]=75'
+      substituteInPlace installation/drivers/c/safeCutOffPower.c --replace '/dev/ttyUSB0' '${device}'
+    '';
+
+    buildPhase = ''
+      runHook preBuild
+      cd installation/drivers/c
+      make clean all
+      runHook postBuild
+    '';
+
+    installPhase = ''
+      runHook preInstall
+      mkdir -p $out/bin
+      install -m755 ./pwmFanControl64 $out/bin/pwmFanControl
+      install -m755 ./safeCutOffPower64 $out/bin/safeCutOffPower
+      runHook postInstall
+    '';
+  }