enable transmission daemon

home/services/default.nix

@@ -2,6 +2,7 @@ _: {
   imports = [
     ./aria2c.nix
     ./gpg-agent.nix
+    ./transmission.nix
   ];
   services = {
     gnome-keyring = {

home/services/transmission.nix

@@ -0,0 +1,25 @@
+{ config, pkgs, ... }: {
+  systemd.user.services = {
+    transmission-daemon =
+      let
+        torrents-dir = "${config.xdg.userDirs.download}/Torrents";
+        transmission-daemon = "${pkgs.transmission_4}/bin/transmission-daemon";
+      in
+      {
+        Unit = {
+          Description = "Transmission Daemon";
+          Documentation = [ "man:transmission-daemon(1)" ];
+          After = [ "network.target" ];
+        };
+        Install = {
+          WantedBy = [ "default.target" ];
+        };
+        Service = {
+          Type = "simple";
+          ExecStart = ''
+            ${transmission-daemon} -f -c "${torrents-dir}/init" --incomplete-dir "${torrents-dir}/.incomplete" --download-dir "${torrents-dir}/downloads" --encryption-preferred --portmap --dht --peerport 51413 --utp
+          '';
+        };
+      };
+  };
+}