nixpkgs/nixos/modules/services/video/replay-sorcery.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.replay-sorcery;
configFile = generators.toKeyValue {} cfg.settings;
in
{
options = with types; {
services.replay-sorcery = {
enable = mkEnableOption "the ReplaySorcery service for instant-replays";
enableSysAdminCapability = mkEnableOption ''
the system admin capability to support hardware accelerated
video capture. This is equivalent to running ReplaySorcery as
root, so use with caution'';
autoStart = mkOption {
type = bool;
default = false;
description = lib.mdDoc "Automatically start ReplaySorcery when graphical-session.target starts.";
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};
settings = mkOption {
type = attrsOf (oneOf [ str int ]);
default = {};
description = lib.mdDoc "System-wide configuration for ReplaySorcery (/etc/replay-sorcery.conf).";
example = literalExpression ''
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{
videoInput = "hwaccel"; # requires `services.replay-sorcery.enableSysAdminCapability = true`
videoFramerate = 60;
}
'';
};
};
};
config = mkIf cfg.enable {
environment = {
systemPackages = [ pkgs.replay-sorcery ];
etc."replay-sorcery.conf".text = configFile;
};
security.wrappers = mkIf cfg.enableSysAdminCapability {
replay-sorcery = {
owner = "root";
group = "root";
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capabilities = "cap_sys_admin+ep";
source = "${pkgs.replay-sorcery}/bin/replay-sorcery";
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};
};
systemd = {
packages = [ pkgs.replay-sorcery ];
user.services.replay-sorcery = {
wantedBy = mkIf cfg.autoStart [ "graphical-session.target" ];
partOf = mkIf cfg.autoStart [ "graphical-session.target" ];
serviceConfig = {
ExecStart = mkIf cfg.enableSysAdminCapability [
"" # Tell systemd to clear the existing ExecStart list, to prevent appending to it.
"${config.security.wrapperDir}/replay-sorcery"
];
};
};
};
};
meta = {
maintainers = with maintainers; [ kira-bruneau ];
};
}