From 72d16ac9b5550ac11c42e599b27bb2e53a0f07f0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakub=20Soko=C5=82owski?= <jakub@status.im>
Date: Sat, 16 Oct 2021 14:09:43 +0200
Subject: [PATCH] transmission: add extraFlags configuration option
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Makes service more customizeable and makes debuggingin easier through
the use of flags like `--log-debug` or `--dump-settings`.

Signed-off-by: Jakub Sokołowski <jakub@status.im>
---
 nixos/modules/services/torrent/transmission.nix | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/services/torrent/transmission.nix b/nixos/modules/services/torrent/transmission.nix
index d5c62550ecef..a6ff467914a1 100644
--- a/nixos/modules/services/torrent/transmission.nix
+++ b/nixos/modules/services/torrent/transmission.nix
@@ -214,6 +214,15 @@ in
         example = "/var/lib/secrets/transmission/settings.json";
       };
 
+      extraFlags = mkOption {
+        type = types.listOf types.str;
+        default = [];
+        example = [ "--log-debug" ];
+        description = ''
+          Extra flags passed to the transmission command in the service definition.
+        '';
+      };
+
       openPeerPorts = mkEnableOption "opening of the peer port(s) in the firewall";
 
       openRPCPort = mkEnableOption "opening of the RPC port in the firewall";
@@ -262,7 +271,7 @@ in
           install -D -m 600 -o '${cfg.user}' -g '${cfg.group}' /dev/stdin \
            '${cfg.home}/${settingsDir}/settings.json'
         '')];
-        ExecStart="${pkgs.transmission}/bin/transmission-daemon -f -g ${cfg.home}/${settingsDir}";
+        ExecStart="${pkgs.transmission}/bin/transmission-daemon -f -g ${cfg.home}/${settingsDir} ${escapeShellArgs cfg.extraFlags}";
         ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
         User = cfg.user;
         Group = cfg.group;