tjh.dev
1{
2 lib,
3 stdenv,
4 fetchFromGitHub,
5 kernel,
6 bc,
7 nukeReferences,
8}:
9
10stdenv.mkDerivation {
11 pname = "rtl8821au";
12 version = "${kernel.version}-unstable-2025-04-08";
13
14 src = fetchFromGitHub {
15 owner = "morrownr";
16 repo = "8821au-20210708";
17 rev = "b90b76d30709fb82705cbc2e295a7dde9372a0a8";
18 hash = "sha256-rS7UXey2x00Dn9E2l5nRiVElYNKMRjIYDa+qDCGt5ac=";
19 };
20
21 nativeBuildInputs = [
22 bc
23 nukeReferences
24 ]
25 ++ kernel.moduleBuildDependencies;
26
27 hardeningDisable = [
28 "pic"
29 "format"
30 ];
31
32 env.NIX_CFLAGS_COMPILE = "-Wno-error=incompatible-pointer-types";
33
34 makeFlags = [
35 "ARCH=${stdenv.hostPlatform.linuxArch}"
36 ("CONFIG_PLATFORM_I386_PC=" + (if stdenv.hostPlatform.isx86 then "y" else "n"))
37 (
38 "CONFIG_PLATFORM_ARM_RPI="
39 + (if (stdenv.hostPlatform.isAarch32 || stdenv.hostPlatform.isAarch64) then "y" else "n")
40 )
41 ]
42 ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
43 "CROSS_COMPILE=${stdenv.cc.targetPrefix}"
44 ];
45
46 prePatch = ''
47 substituteInPlace ./Makefile \
48 --replace /lib/modules/ "${kernel.dev}/lib/modules/" \
49 --replace /sbin/depmod \# \
50 --replace '$(MODDESTDIR)' "$out/lib/modules/${kernel.modDirVersion}/kernel/net/wireless/"
51 '';
52
53 preInstall = ''
54 mkdir -p "$out/lib/modules/${kernel.modDirVersion}/kernel/net/wireless/"
55 '';
56
57 postInstall = ''
58 nuke-refs $out/lib/modules/*/kernel/net/wireless/*.ko
59 '';
60
61 enableParallelBuilding = true;
62
63 meta = with lib; {
64 description = "rtl8821AU and rtl8812AU chipset driver with firmware";
65 homepage = "https://github.com/morrownr/8821au-20210708";
66 license = licenses.gpl2Only;
67 platforms = lib.platforms.linux;
68 maintainers = with maintainers; [ plchldr ];
69 };
70}