add module

module.nix

@@ -0,0 +1,82 @@
+{ config
+, lib
+, pkgs
+, ...
+}:
+with lib; let
+  cfg = config.services.mitemp;
+  format = pkgs.formats.toml { };
+  configFile = format.generate "mitemp-config.toml" {
+    inherit (cfg) names;
+    listen = {
+      inherit (cfg) socket;
+    };
+  };
+in
+{
+  options.services.mitemp = {
+    enable = mkEnableOption "mitemp";
+
+    names = mkOption {
+      type = types.attrs;
+      default = { };
+      description = "Names for mitemp sensors";
+    };
+
+    socket = mkOption {
+      type = types.str;
+      default = "/run/mitemp/mitemp.sock";
+      description = "socket to listen on";
+    };
+
+    package = mkOption {
+      type = types.package;
+      defaultText = literalExpression "pkgs.mitemp-prometheus";
+      description = "package to use";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    users.users.mitemp = {
+      isSystemUser = true;
+      group = "mitemp";
+    };
+    users.groups.mitemp = {};
+
+    services.dbus.packages = [cfg.package];
+    systemd.services."mitemp" = {
+      wantedBy = [ "multi-user.target" ];
+      after = [ "dbus.service" ];
+
+      serviceConfig = {
+        ExecStart = "${cfg.package}/bin/mitemp-prometheus ${configFile}";
+
+        Restart = "on-failure";
+        User = "mitemp";
+        PrivateTmp = true;
+        ProtectSystem = "strict";
+        ProtectHome = true;
+        NoNewPrivileges = true;
+        ProtectClock = true;
+        CapabilityBoundingSet = true;
+        ProtectKernelLogs = true;
+        ProtectControlGroups = true;
+        SystemCallArchitectures = "native";
+        ProtectKernelModules = true;
+        RestrictNamespaces = true;
+        MemoryDenyWriteExecute = true;
+        ProtectHostname = true;
+        LockPersonality = true;
+        ProtectKernelTunables = true;
+        RestrictAddressFamilies = [ "AF_UNIX" ];
+        RuntimeDirectory = "mitemp";
+        RestrictRealtime = true;
+        ProtectProc = "noaccess";
+        SystemCallFilter = [ "@system-service" "~@resources" "~@privileged" ];
+        IPAddressDeny = "any";
+        PrivateUsers = true;
+        ProcSubset = "pid";
+      };
+    };
+  };
+}