nixos/statsd: drop (#496358)

nixos/doc/manual/release-notes/rl-2605.section.md

@@ -80,6 +80,8 @@
 
 - `sing-box` has been updated to 1.13.0, which has removed some deprecated options.  See [upstream documentation](https://sing-box.sagernet.org/configuration/) for details and migration options.
 
+- `services.statsd` has been removed because the packages it relies on do not exist anymore in nixpkgs.
+
 - `services.tandoor-recipes` now uses a sub-directory for media files by default starting with `26.05`. Existing setups should move media files out of the data directory and adjust `services.tandoor-recipes.extraConfig.MEDIA_ROOT` accordingly. See [Migrating media files for pre 26.05 installations](#module-services-tandoor-recipes-migrating-media).
 
 - `rustic` was upgraded to `0.11.x`, which contains breaking [changes to command-line parameters and configuration file](https://rustic.cli.rs/docs/breaking_changes.html#0110).

nixos/modules/module-list.nix

@@ -1057,7 +1057,6 @@
   ./services/monitoring/scrutiny.nix
   ./services/monitoring/smartd.nix
   ./services/monitoring/snmpd.nix
-  ./services/monitoring/statsd.nix
   ./services/monitoring/sysstat.nix
   ./services/monitoring/teamviewer.nix
   ./services/monitoring/telegraf.nix

nixos/modules/rename.nix

@@ -319,6 +319,9 @@ in
       the program being unmaintained. The options `programs.msmtp.*` can be
       used instead.
     '')
+    (mkRemovedOptionModule [ "services" "statsd" ] ''
+      The statsd module was removed because the packages it uses have been removed from nixpkgs.
+    '')
     (mkRemovedOptionModule [ "services" "sourcehut" ] ''
       The sourcehut packages and the corresponding module have been removed due to being broken and unmaintained.
     '')

nixos/modules/services/monitoring/statsd.nix

@@ -1,154 +0,0 @@
-{
-  config,
-  lib,
-  pkgs,
-  ...
-}:
-let
-
-  cfg = config.services.statsd;
-
-  isBuiltinBackend =
-    name:
-    builtins.elem name [
-      "graphite"
-      "console"
-      "repeater"
-    ];
-
-  backendsToPackages =
-    let
-      mkMap = list: name: if isBuiltinBackend name then list else list ++ [ pkgs.nodePackages.${name} ];
-    in
-    lib.foldl mkMap [ ];
-
-  configFile = pkgs.writeText "statsd.conf" ''
-    {
-      address: "${cfg.listenAddress}",
-      port: "${toString cfg.port}",
-      mgmt_address: "${cfg.mgmt_address}",
-      mgmt_port: "${toString cfg.mgmt_port}",
-      backends: [${
-        lib.concatMapStringsSep "," (
-          name: if (isBuiltinBackend name) then ''"./backends/${name}"'' else ''"${name}"''
-        ) cfg.backends
-      }],
-      ${lib.optionalString (cfg.graphiteHost != null) ''graphiteHost: "${cfg.graphiteHost}",''}
-      ${lib.optionalString (cfg.graphitePort != null) ''graphitePort: "${toString cfg.graphitePort}",''}
-      console: {
-        prettyprint: false
-      },
-      log: {
-        backend: "stdout"
-      },
-      automaticConfigReload: false${lib.optionalString (cfg.extraConfig != null) ","}
-      ${cfg.extraConfig}
-    }
-  '';
-
-  deps = pkgs.buildEnv {
-    name = "statsd-runtime-deps";
-    pathsToLink = [ "/lib" ];
-    ignoreCollisions = true;
-
-    paths = backendsToPackages cfg.backends;
-  };
-
-in
-
-{
-
-  ###### interface
-
-  options.services.statsd = {
-
-    enable = lib.mkEnableOption "statsd";
-
-    listenAddress = lib.mkOption {
-      description = "Address that statsd listens on over UDP";
-      default = "127.0.0.1";
-      type = lib.types.str;
-    };
-
-    port = lib.mkOption {
-      description = "Port that stats listens for messages on over UDP";
-      default = 8125;
-      type = lib.types.port;
-    };
-
-    mgmt_address = lib.mkOption {
-      description = "Address to run management TCP interface on";
-      default = "127.0.0.1";
-      type = lib.types.str;
-    };
-
-    mgmt_port = lib.mkOption {
-      description = "Port to run the management TCP interface on";
-      default = 8126;
-      type = lib.types.port;
-    };
-
-    backends = lib.mkOption {
-      description = "List of backends statsd will use for data persistence";
-      default = [ ];
-      example = [
-        "graphite"
-        "console"
-        "repeater"
-        "statsd-librato-backend"
-        "statsd-influxdb-backend"
-      ];
-      type = lib.types.listOf lib.types.str;
-    };
-
-    graphiteHost = lib.mkOption {
-      description = "Hostname or IP of Graphite server";
-      default = null;
-      type = lib.types.nullOr lib.types.str;
-    };
-
-    graphitePort = lib.mkOption {
-      description = "Port of Graphite server (i.e. carbon-cache).";
-      default = null;
-      type = lib.types.nullOr lib.types.port;
-    };
-
-    extraConfig = lib.mkOption {
-      description = "Extra configuration options for statsd";
-      default = "";
-      type = lib.types.nullOr lib.types.str;
-    };
-
-  };
-
-  ###### implementation
-
-  config = lib.mkIf cfg.enable {
-
-    assertions = map (backend: {
-      assertion = !isBuiltinBackend backend -> lib.hasAttrByPath [ backend ] pkgs.nodePackages;
-      message = "Only builtin backends (graphite, console, repeater) or backends enumerated in `pkgs.nodePackages` are allowed!";
-    }) cfg.backends;
-
-    users.users.statsd = {
-      uid = config.ids.uids.statsd;
-      description = "Statsd daemon user";
-    };
-
-    systemd.services.statsd = {
-      description = "Statsd Server";
-      wantedBy = [ "multi-user.target" ];
-      environment = {
-        NODE_PATH = "${deps}/lib/node_modules";
-      };
-      serviceConfig = {
-        ExecStart = "${pkgs.statsd}/bin/statsd ${configFile}";
-        User = "statsd";
-      };
-    };
-
-    environment.systemPackages = [ pkgs.statsd ];
-
-  };
-
-}