refactor: Yoink changes from upstream PR

modules/qbittorrent-nox.nix

@@ -6,6 +6,28 @@
 }:
 let
   cfg = config.services.qbittorrent-nox;
+  gendeepINI = lib.generators.toINI {
+    mkKeyValue =
+      let
+        sep = "=";
+      in
+      k: v:
+        if builtins.isAttrs v then
+          builtins.concatStringsSep "\n"
+            (
+              lib.collect builtins.isString (
+                lib.mapAttrsRecursive
+                  (
+                    path: value:
+                      "${lib.escape [ sep ] (builtins.oncatStringsSep "\\" ([ k ] ++ path))}${sep}${lib.generators.mkValueStringDefault { } value}"
+                  )
+                  v
+              )
+            )
+        else
+          lib.generators.mkKeyValueDefault { } sep k v;
+  };
+  configFile = pkgs.writeText "qBittorrent.conf" (gendeepINI cfg.serverConfig);
 in
 {
   options.services.qbittorrent-nox = {
@@ -13,20 +35,6 @@ in
 
     package = lib.mkPackageOption pkgs "qbittorrent-nox" { };
 
-    openFirewall = lib.mkEnableOption "opening both the webuiPort and torrentPort over TCP in the firewall";
-
-    webuiPort = lib.mkOption {
-      default = 8080;
-      type = lib.types.nullOr lib.types.port;
-      description = "the port passed to qbittorrent via `--webui-port`";
-    };
-
-    torrentingPort = lib.mkOption {
-      default = null;
-      type = lib.types.nullOr lib.types.port;
-      description = "the port passed to qbittorrent via `--torrenting-port`";
-    };
-
     user = lib.mkOption {
       type = lib.types.str;
       default = "qbittorrent";
@@ -44,6 +52,58 @@ in
       default = "/var/lib/qBittorrent/";
       description = "the path passed to qbittorrent via --profile.";
     };
+
+    openFirewall = lib.mkEnableOption "opening both the webuiPort and torrentPort over TCP in the firewall";
+
+    webuiPort = lib.mkOption {
+      default = 8080;
+      type = lib.types.nullOr lib.types.port;
+      description = "the port passed to qbittorrent via `--webui-port`";
+    };
+
+    torrentingPort = lib.mkOption {
+      default = null;
+      type = lib.types.nullOr lib.types.port;
+      description = "the port passed to qbittorrent via `--torrenting-port`";
+    };
+
+    serverConfig = lib.mkOption {
+      type = lib.typessubmodule {
+        freeformType = lib.types.attrsOf (lib.types.attrsOf lib.types.anything);
+      };
+      description = ''
+        Free-form settings mapped to the `qBittorrent.conf` file in the profile.
+        Refer to [Explanation-of-Options-in-qBittorrent](https://github.com/qbittorrent/qBittorrent/wiki/Explanation-of-Options-in-qBittorrent).
+        The Password_PBKDF2 format is oddly unique, you will likely want to use [this tool](https://codeberg.org/feathecutie/qbittorrent_password) to generate the format.
+        Alternatively you can run qBittorrent independently first and use its webUI to generate the format.
+
+        Optionally an alternative webUI can be easily set. VueTorrent for example:
+        ```nix
+        {
+          Preferences = {
+            WebUI = {
+              AlternativeUIEnabled = true;
+              RootFolder = "''${pkgs.vuetorrent}/share/vuetorrent";
+            };
+          };
+        }
+        ];
+        ```
+      '';
+      example = lib.literalExpression ''
+        {
+          LegalNotice.Accepted = true;
+          Preferences = {
+            WebUI = {
+              Username = "user";
+              Password_PBKDF2 = "generated ByteArray.";
+            };
+            General.Locale = "en";
+          };
+        }
+      '';
+    };
+
     extraArgs = lib.mkOption {
       type = lib.types.listOf lib.types.str;
       default = [ ];
@@ -60,13 +120,18 @@ in
       tmpfiles.settings = {
         qbittorrent = {
           "${cfg.profileDir}/qBittorrent/"."d" = {
-            mode = "750";
+            mode = "755";
             inherit (cfg) user group;
           };
           "${cfg.profileDir}/qBittorrent/config/"."d" = {
-            mode = "750";
+            mode = "755";
             inherit (cfg) user group;
           };
+          "${cfg.profileDir}/qBittorrent/config/qBittorrent.conf"."L+" = lib.mkIf (cfg.serverConfig != null) {
+            mode = "1400";
+            inherit (cfg) user group;
+            argument = "${configFile}";
+          };
         };
       };
       services.qbittorrent-nox = {
@@ -78,12 +143,7 @@ in
           "nss-lookup.target"
         ];
         wantedBy = [ "multi-user.target" ];
-
+        restartTriggers = lib.optional (cfg.serverConfig != null) configFile;
-        # Needed for running cross-seed's hook
-        # /bin/sh -c "curl -XPOST http://localhost:2468/api/webhook?apikey=key --data-urlencode 'name=%N'"
-        path = with pkgs; [
-          curl
-        ];
 
         serviceConfig = {
           Type = "simple";