126 lines
3.4 KiB
Nix
126 lines
3.4 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.keyd;
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settingsFormat = pkgs.formats.ini { };
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in
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{
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options = {
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services.keyd = {
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enable = mkEnableOption (lib.mdDoc "keyd, a key remapping daemon");
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ids = mkOption {
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type = types.listOf types.string;
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default = [ "*" ];
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example = [ "*" "-0123:0456" ];
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description = lib.mdDoc ''
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Device identifiers, as shown by {manpage}`keyd(1)`.
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'';
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};
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settings = mkOption {
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type = settingsFormat.type;
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default = { };
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example = {
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main = {
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capslock = "overload(control, esc)";
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rightalt = "layer(rightalt)";
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};
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rightalt = {
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j = "down";
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k = "up";
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h = "left";
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l = "right";
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};
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};
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description = lib.mdDoc ''
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Configuration, except `ids` section, that is written to {file}`/etc/keyd/default.conf`.
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See <https://github.com/rvaiya/keyd> how to configure.
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'';
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};
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};
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};
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config = mkIf cfg.enable {
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environment.etc."keyd/default.conf".source = pkgs.runCommand "default.conf"
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{
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ids = ''
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[ids]
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${concatStringsSep "\n" cfg.ids}
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'';
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passAsFile = [ "ids" ];
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} ''
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cat $idsPath <(echo) ${settingsFormat.generate "keyd-main.conf" cfg.settings} >$out
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'';
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hardware.uinput.enable = lib.mkDefault true;
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systemd.services.keyd = {
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description = "Keyd remapping daemon";
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documentation = [ "man:keyd(1)" ];
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wantedBy = [ "multi-user.target" ];
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restartTriggers = [
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config.environment.etc."keyd/default.conf".source
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];
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# this is configurable in 2.4.2, later versions seem to remove this option.
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# post-2.4.2 may need to set makeFlags in the derivation:
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#
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# makeFlags = [ "SOCKET_PATH/run/keyd/keyd.socket" ];
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environment.KEYD_SOCKET = "/run/keyd/keyd.sock";
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serviceConfig = {
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ExecStart = "${pkgs.keyd}/bin/keyd";
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Restart = "always";
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# TODO investigate why it doesn't work propeprly with DynamicUser
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# See issue: https://github.com/NixOS/nixpkgs/issues/226346
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# DynamicUser = true;
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SupplementaryGroups = [
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config.users.groups.input.name
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config.users.groups.uinput.name
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];
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RuntimeDirectory = "keyd";
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# Hardening
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CapabilityBoundingSet = "";
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DeviceAllow = [
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"char-input rw"
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"/dev/uinput rw"
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];
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ProtectClock = true;
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PrivateNetwork = true;
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ProtectHome = true;
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ProtectHostname = true;
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PrivateUsers = true;
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PrivateMounts = true;
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PrivateTmp = true;
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RestrictNamespaces = true;
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ProtectKernelLogs = true;
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ProtectKernelModules = true;
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ProtectKernelTunables = true;
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ProtectControlGroups = true;
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MemoryDenyWriteExecute = true;
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RestrictRealtime = true;
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LockPersonality = true;
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ProtectProc = "invisible";
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SystemCallFilter = [
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"@system-service"
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"~@privileged"
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"~@resources"
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];
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RestrictAddressFamilies = [ "AF_UNIX" ];
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RestrictSUIDSGID = true;
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IPAddressDeny = [ "any" ];
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NoNewPrivileges = true;
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ProtectSystem = "strict";
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ProcSubset = "pid";
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UMask = "0077";
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};
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};
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};
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}
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