pyrox.dev
1{ lib, stdenv, substituteAll }:
2
3# Provides a facility to hook into rfkill changes.
4#
5# Exemplary usage:
6#
7# Add this package to udev.packages, e.g.:
8# udev.packages = [ pkgs.rfkill_udev ];
9#
10# Add a hook script in the managed etc directory, e.g.:
11# etc."rfkill.hook" = {
12# mode = "0755";
13# text = ''
14# #!${pkgs.runtimeShell}
15#
16# if [ "$RFKILL_STATE" -eq "1" ]; then
17# exec ${config.system.build.upstart}/sbin/initctl emit -n antenna-on
18# else
19# exec ${config.system.build.upstart}/sbin/initctl emit -n antenna-off
20# fi
21# '';
22# }
23
24# Note: this package does not need the binaries
25# in the rfkill package.
26
27let
28 rfkillHook =
29 substituteAll {
30 inherit (stdenv) shell;
31 isExecutable = true;
32 src = ./rfkill-hook.sh;
33 };
34in stdenv.mkDerivation {
35 name = "rfkill-udev";
36
37 dontUnpack = true;
38 dontBuild = true;
39
40 installPhase = ''
41 mkdir -p "$out/etc/udev/rules.d/";
42 cat > "$out/etc/udev/rules.d/90-rfkill.rules" << EOF
43 SUBSYSTEM=="rfkill", ATTR{type}=="wlan", RUN+="$out/bin/rfkill-hook.sh"
44 EOF
45
46 mkdir -p "$out/bin/";
47 cp ${rfkillHook} "$out/bin/rfkill-hook.sh"
48 '';
49
50 meta = with lib; {
51 homepage = "http://wireless.kernel.org/en/users/Documentation/rfkill";
52 description = "Rules+hook for udev to catch rfkill state changes";
53 platforms = platforms.linux;
54 license = licenses.mit;
55 };
56}