pkgs/os-specific/linux/bbswitch/default.nix

   1 { lib, stdenv, fetchFromGitHub, fetchpatch, kernel, runtimeShell }:
   2
   3 let
   4   baseName = "bbswitch";
   5   version = "unstable-2021-11-29";
   6   name = "${baseName}-${version}-${kernel.version}";
   7
   8 in
   9
  10 stdenv.mkDerivation {
  11   inherit name;
  12
  13   src = fetchFromGitHub {
  14     owner = "Bumblebee-Project";
  15     repo = "bbswitch";
  16     # https://github.com/Bumblebee-Project/bbswitch/tree/develop
  17     rev = "23891174a80ea79c7720bcc7048a5c2bfcde5cd9";
  18     hash = "sha256-50v1Jxem5kaI1dHOKmgBbPLxI82QeYxiaRHhrHpWRzU=";
  19   };
  20
  21   patches = [
  22     (fetchpatch {
  23       url = "https://raw.githubusercontent.com/archlinux/svntogit-community/0bd986055ba52887b81048de5c61e618eec06eb0/trunk/0003-kernel-5.18.patch";
  24       sha256 = "sha256-va62/bR1qyBBMPg0lUwCH7slGG0XijxVCsFa4FCoHEQ=";
  25     })
  26   ];
  27
  28   nativeBuildInputs = kernel.moduleBuildDependencies;
  29
  30   hardeningDisable = [ "pic" ];
  31
  32   preBuild = ''
  33     substituteInPlace Makefile \
  34       --replace "/lib/modules" "${kernel.dev}/lib/modules"
  35   '';
  36
  37   makeFlags = kernel.makeFlags;
  38
  39   installPhase = ''
  40     mkdir -p $out/lib/modules/${kernel.modDirVersion}/misc
  41     cp bbswitch.ko $out/lib/modules/${kernel.modDirVersion}/misc
  42
  43     mkdir -p $out/bin
  44     tee $out/bin/discrete_vga_poweroff << EOF
  45     #!${runtimeShell}
  46
  47     echo -n OFF > /proc/acpi/bbswitch
  48     EOF
  49     tee $out/bin/discrete_vga_poweron << EOF
  50     #!${runtimeShell}
  51
  52     echo -n ON > /proc/acpi/bbswitch
  53     EOF
  54     chmod +x $out/bin/discrete_vga_poweroff $out/bin/discrete_vga_poweron
  55   '';
  56
  57   meta = with lib; {
  58     description = "Module for powering off hybrid GPUs";
  59     platforms = [ "x86_64-linux" "i686-linux" ];
  60     homepage = "https://github.com/Bumblebee-Project/bbswitch";
  61     maintainers = with maintainers; [ abbradar ];
  62     license = licenses.gpl2Plus;
  63   };
  64 }