Add generic-device-plugin package and module

Signed-off-by: magic_rb <[email protected]>

modules/list.nix

@@ -49,4 +49,5 @@
   ./services/synapse.nix
   ./services/dnsmasq.nix
   ./services/attic.nix
+  ./services/generic-device-plugin.nix
 ]

modules/services/generic-device-plugin.nix

@@ -0,0 +1,91 @@
+# SPDX-FileCopyrightText:  2021 Richard Brežák and NixNG contributors
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+#   This Source Code Form is subject to the terms of the Mozilla Public
+#   License, v. 2.0. If a copy of the MPL was not distributed with this
+#   file, You can obtain one at http://mozilla.org/MPL/2.0/.
+{
+  pkgs,
+  config,
+  lib,
+  nglib,
+  ...
+}:
+let
+  cfg = config.services.genericDevicePlugin;
+  settingsFormat = pkgs.formats.json { };
+  usageLink = "https://github.com/squat/generic-device-plugin/tree/main?tab=readme-ov-file#usage";
+in
+{
+  options.services.genericDevicePlugin = {
+    enable = lib.mkEnableOption "Whether to enable the generic-device-plugin";
+
+    package = lib.mkPackageOption pkgs "generic-device-plugin" { };
+
+    settings = {
+      devices = lib.mkOption {
+        type = lib.types.listOf (settingsFormat.type);
+        default = [ ];
+        description = ''
+          See [upstream documentation](${usageLink});
+        '';
+        example = lib.literalExpression ''
+          [
+            {
+              name = "zigbee";
+              groups = lib.singleton { paths = lib.singleton { path = "/dev/ttyZigbee"; }; };
+            }
+            {
+              name = "ender3";
+              groups = lib.singleton { paths = lib.singleton { path = "/dev/ttyEnder3"; }; };
+            }
+          ]
+        '';
+      };
+      domain = lib.mkOption {
+        type = lib.types.nullOr lib.types.str;
+        default = null;
+        description = ''
+          See [upstream documentation](${usageLink}). If `null`, upstream default is used.
+        '';
+      };
+      listen = lib.mkOption {
+        type = lib.types.nullOr lib.types.str;
+        default = null;
+        description = ''
+          See [upstream documentation](${usageLink}). If `null`, upstream default is used.
+        '';
+      };
+      logLevel = lib.mkOption {
+        type = lib.types.enum [
+          "all"
+          "debug"
+          "info"
+          "warn"
+          "error"
+          "none"
+          "info"
+        ];
+        default = "info";
+        description = ''
+          Log level to use.
+        '';
+      };
+      pluginDirectory = lib.mkOption {
+        type = lib.types.nullOr lib.types.path;
+        default = null;
+        description = ''
+          See [upstream documentation](${usageLink}). If `null`, upstream default is used.
+        '';
+      };
+    };
+  };
+  config = lib.mkIf cfg.enable {
+    init.services.generic-device-plugin = {
+      shutdownOnExit = true;
+      enabled = true;
+      execStart = "${lib.getExe cfg.package} --config ${settingsFormat.generate "settings.json" cfg.settings}";
+    };
+  };
+}

overlay/default.nix

@@ -20,6 +20,7 @@ in
   systemdStandalone = callPackage ./systemd-minimal.nix { };
   systemdTmpfilesD = callPackage ./systemd-tmpfiles.d.nix { };
   dinit = callPackage ./dinit.nix { };
+  generic-device-plugin = callPackage ./generic-device-plugin.nix { };
 
   util-linuxSystemdFree = prev.util-linux.override {
     systemdSupport = false;

overlay/generic-device-plugin.nix

@@ -0,0 +1,31 @@
+{
+  buildGoModule,
+  fetchFromGitHub,
+  lib,
+  ...
+}:
+
+buildGoModule {
+  pname = "generic-device-plugin";
+  version = "20241207-unstable";
+
+  src = fetchFromGitHub {
+    owner = "squat";
+    repo = "generic-device-plugin";
+    rev = "36bfc606bba2064de6ede0ff2764cbb52edff70d";
+    hash = "sha256-xztISJxFWKFWvanWY6WBx7KBIbJdUUkVX+YM0xLgBzk=";
+  };
+
+  vendorHash = "sha256-L0OYB6iI4z1o4FEmzpL0Qbc9uamyJZ89HWV77D10p3M=";
+
+  # requires a docker instance running
+  doCheck = false;
+
+  meta = with lib; {
+    description = "The generic-device-plugin enables allocating generic Linux devices, such as serial devices, the FUSE device, or video cameras, to Kubernetes Pods.";
+    homepage = "https://github.com/squat/generic-device-plugin";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ ];
+    mainProgram = "generic-device-plugin";
+  };
+}