60 lines
2.3 KiB
Nix
60 lines
2.3 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.services.persistent-evdev;
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settingsFormat = pkgs.formats.json {};
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configFile = settingsFormat.generate "persistent-evdev-config" {
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cache = "/var/cache/persistent-evdev";
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devices = lib.mapAttrs (virt: phys: "/dev/input/by-id/${phys}") cfg.devices;
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};
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in
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{
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options.services.persistent-evdev = {
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enable = lib.mkEnableOption "virtual input devices that persist even if the backing device is hotplugged";
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devices = lib.mkOption {
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default = {};
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type = with lib.types; attrsOf str;
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description = ''
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A set of virtual proxy device labels with backing physical device ids.
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Physical devices should already exist in <filename class="devicefile">/dev/input/by-id/</filename>.
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Proxy devices will be automatically given a <literal>uinput-</literal> prefix.
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See the <link xlink:href="https://github.com/aiberia/persistent-evdev#example-usage-with-libvirt">project page</link>
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for example configuration of virtual devices with libvirt
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and remember to add <literal>uinput-*</literal> devices to the qemu
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<literal>cgroup_device_acl</literal> list (see <xref linkend="opt-virtualisation.libvirtd.qemu.verbatimConfig"/>).
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'';
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example = lib.literalExpression ''
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{
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persist-mouse0 = "usb-Logitech_G403_Prodigy_Gaming_Mouse_078738533531-event-if01";
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persist-mouse1 = "usb-Logitech_G403_Prodigy_Gaming_Mouse_078738533531-event-mouse";
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persist-mouse2 = "usb-Logitech_G403_Prodigy_Gaming_Mouse_078738533531-if01-event-kbd";
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persist-keyboard0 = "usb-Microsoft_Natural®_Ergonomic_Keyboard_4000-event-kbd";
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persist-keyboard1 = "usb-Microsoft_Natural®_Ergonomic_Keyboard_4000-if01-event-kbd";
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}
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'';
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};
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};
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config = lib.mkIf cfg.enable {
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systemd.services.persistent-evdev = {
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documentation = [ "https://github.com/aiberia/persistent-evdev/blob/master/README.md" ];
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description = "Persistent evdev proxy";
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Restart = "on-failure";
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ExecStart = "${pkgs.persistent-evdev}/bin/persistent-evdev.py ${configFile}";
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CacheDirectory = "persistent-evdev";
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};
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};
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services.udev.packages = [ pkgs.persistent-evdev ];
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};
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meta.maintainers = with lib.maintainers; [ lodi ];
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}
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