{ config, lib, pkgs, ... }: with lib; let cfg = config.services.memcached; memcached = pkgs.memcached; in { ###### interface options = { services.memcached = { enable = mkOption { default = false; description = " Whether to enable Memcached. "; }; user = mkOption { default = "memcached"; description = "The user to run Memcached as"; }; listen = mkOption { default = "127.0.0.1"; description = "The IP address to bind to"; }; port = mkOption { default = 11211; description = "The port to bind to"; }; enableUnixSocket = mkEnableOption "unix socket at /run/memcached/memcached.sock"; maxMemory = mkOption { default = 64; description = "The maximum amount of memory to use for storage, in megabytes."; }; maxConnections = mkOption { default = 1024; description = "The maximum number of simultaneous connections"; }; extraOptions = mkOption { default = []; description = "A list of extra options that will be added as a suffix when running memcached"; }; }; }; ###### implementation config = mkIf config.services.memcached.enable { users.users = optional (cfg.user == "memcached") { name = "memcached"; description = "Memcached server user"; }; environment.systemPackages = [ memcached ]; systemd.services.memcached = { description = "Memcached server"; wantedBy = [ "multi-user.target" ]; after = [ "network.target" ]; serviceConfig = { PermissionsStartOnly = true; ExecStartPre = optionals cfg.enableUnixSocket [ "${pkgs.coreutils}/bin/install -d -o ${cfg.user} /run/memcached/" "${pkgs.coreutils}/bin/chown -R ${cfg.user} /run/memcached/" ]; ExecStart = let networking = if cfg.enableUnixSocket then "-s /run/memcached/memcached.sock" else "-l ${cfg.listen} -p ${toString cfg.port}"; in "${memcached}/bin/memcached ${networking} -m ${toString cfg.maxMemory} -c ${toString cfg.maxConnections} ${concatStringsSep " " cfg.extraOptions}"; User = cfg.user; }; }; }; imports = [ (mkRemovedOptionModule ["services" "memcached" "socket"] '' This option was replaced by a fixed unix socket path at /run/memcached/memcached.sock enabled using services.memached.enableUnixSocket. '') ]; }