tjh.dev
nixpkgs mirror (for testing)
github.com/NixOS/nixpkgs
nix
1{ lib, stdenv, fetchFromGitHub, fetchpatch, kernel, runtimeShell }:
2
3let
4 baseName = "bbswitch";
5 version = "0.8";
6 name = "${baseName}-${version}-${kernel.version}";
7
8in
9
10stdenv.mkDerivation {
11 inherit name;
12
13 src = fetchFromGitHub {
14 owner = "Bumblebee-Project";
15 repo = "bbswitch";
16 rev = "v${version}";
17 hash = "sha256-FHC8myKnouNDERVds2QCJj1ZstjHrOzFpb+FDiSBjL4=";
18 };
19
20 patches = [
21 (fetchpatch {
22 url = "https://github.com/Bumblebee-Project/bbswitch/pull/102.patch";
23 sha256 = "1lbr6pyyby4k9rn2ry5qc38kc738d0442jhhq57vmdjb6hxjya7m";
24 })
25 (fetchpatch {
26 url = "https://github.com/Bumblebee-Project/bbswitch/pull/196.patch";
27 sha256 = "02ihy3piws7783qbm9q0mb9s18ipn5ckdy1iar74xn31qjrsn99n";
28 })
29 ];
30
31 nativeBuildInputs = kernel.moduleBuildDependencies;
32
33 hardeningDisable = [ "pic" ];
34
35 preBuild = ''
36 substituteInPlace Makefile \
37 --replace "\$(shell uname -r)" "${kernel.modDirVersion}" \
38 --replace "/lib/modules" "${kernel.dev}/lib/modules"
39 '';
40
41 makeFlags = kernel.makeFlags;
42
43 installPhase = ''
44 mkdir -p $out/lib/modules/${kernel.modDirVersion}/misc
45 cp bbswitch.ko $out/lib/modules/${kernel.modDirVersion}/misc
46
47 mkdir -p $out/bin
48 tee $out/bin/discrete_vga_poweroff << EOF
49 #!${runtimeShell}
50
51 echo -n OFF > /proc/acpi/bbswitch
52 EOF
53 tee $out/bin/discrete_vga_poweron << EOF
54 #!${runtimeShell}
55
56 echo -n ON > /proc/acpi/bbswitch
57 EOF
58 chmod +x $out/bin/discrete_vga_poweroff $out/bin/discrete_vga_poweron
59 '';
60
61 meta = with lib; {
62 description = "A module for powering off hybrid GPUs";
63 platforms = [ "x86_64-linux" "i686-linux" ];
64 homepage = "https://github.com/Bumblebee-Project/bbswitch";
65 maintainers = with maintainers; [ abbradar ];
66 license = licenses.gpl2Plus;
67 broken = kernel.kernelAtLeast "5.18";
68 };
69}