76 lines
1.5 KiB
Nix
76 lines
1.5 KiB
Nix
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# A module for ‘rtkit’, a DBus system service that hands out realtime
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# scheduling priority to processes that ask for it.
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{
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config,
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lib,
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pkgs,
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utils,
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...
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}:
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with lib;
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let
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cfg = config.security.rtkit;
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package = pkgs.rtkit;
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in
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{
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options = {
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security.rtkit.enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to enable the RealtimeKit system service, which hands
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out realtime scheduling priority to user processes on
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demand. For example, PulseAudio and PipeWire use this to
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acquire realtime priority.
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'';
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};
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security.rtkit.args = mkOption {
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type = types.listOf types.str;
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default = [ ];
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description = ''
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Command-line options for `rtkit-daemon`.
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'';
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example = [
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"--our-realtime-priority=29"
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"--max-realtime-priority=28"
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];
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};
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};
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config = mkIf cfg.enable {
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security.polkit.enable = true;
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# To make polkit pickup rtkit policies
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environment.systemPackages = [ package ];
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services.dbus.packages = [ package ];
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systemd.packages = [ package ];
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systemd.services.rtkit-daemon = {
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serviceConfig.ExecStart = [
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"" # Resets command from upstream unit.
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"${package}/libexec/rtkit-daemon ${utils.escapeSystemdExecArgs cfg.args}"
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];
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};
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users.users.rtkit = {
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isSystemUser = true;
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group = "rtkit";
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description = "RealtimeKit daemon";
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};
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users.groups.rtkit = { };
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};
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}
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