nixos/mame: init

nixos/modules/module-list.nix

@@ -445,6 +445,7 @@
   ./services/misc/logkeys.nix
   ./services/misc/leaps.nix
   ./services/misc/lidarr.nix
+  ./services/misc/mame.nix
   ./services/misc/mathics.nix
   ./services/misc/matrix-synapse.nix
   ./services/misc/mbpfan.nix

nixos/modules/services/misc/mame.nix

@@ -0,0 +1,67 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.mame;
+  mame = "mame${lib.optionalString pkgs.stdenv.is64bit "64"}";
+in
+{
+  options = {
+    services.mame = {
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether to setup TUN/TAP Ethernet interface for MAME emulator.
+        '';
+      };
+      user = mkOption {
+        type = types.str;
+        description = ''
+          User from which you run MAME binary.
+        '';
+      };
+      hostAddr = mkOption {
+        type = types.str;
+        description = ''
+          IP address of the host system. Usually an address of the main network
+          adapter or the adapter through which you get an internet connection.
+        '';
+        example = "192.168.31.156";
+      };
+      emuAddr = mkOption {
+        type = types.str;
+        description = ''
+          IP address of the guest system. The same you set inside guest OS under
+          MAME. Should be on the same subnet as <option>services.mame.hostAddr</option>.
+        '';
+        example = "192.168.31.155";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = [ pkgs.mame ];
+
+    security.wrappers."${mame}" = {
+      source = "${pkgs.mame}/bin/${mame}";
+      capabilities = "cap_net_admin,cap_net_raw+eip";
+    };
+
+    systemd.services.mame = {
+      description = "MAME TUN/TAP Ethernet interface";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      path = [ pkgs.iproute ];
+      serviceConfig = {
+        Type = "oneshot";
+        RemainAfterExit = true;
+        ExecStart = "${pkgs.mame}/bin/taputil.sh -c ${cfg.user} ${cfg.emuAddr} ${cfg.hostAddr} -";
+        ExecStop = "${pkgs.mame}/bin/taputil.sh -d ${cfg.user}";
+      };
+    };
+  };
+
+  meta.maintainers = with lib.maintainers; [ gnidorah ];
+}