fix and implement sync workers

flake.lock

@@ -2,11 +2,11 @@
   "nodes": {
     "matrix-next": {
       "locked": {
-        "lastModified": 1670577007,
-        "narHash": "sha256-e4ovnpSBgrX9nFBZSzTyJ9tLZxgXff9ptQszKDnQkCU=",
+        "lastModified": 1670578498,
+        "narHash": "sha256-ckDNqNF0WAjR8PeT2WOPUrGPdaOwNweaZuenz0Cqohs=",
         "owner": "dali99",
         "repo": "nixos-matrix-modules",
-        "rev": "240e550d4c35ebcef863ffd4adfe35207b8e53d2",
+        "rev": "9568a59b1b144c2337e5e75adb5e6c72475cd9f3",
         "type": "github"
       },
       "original": {

services/matrix/synapse.nix

@@ -23,6 +23,8 @@ in {
 
     workers.federationSenders = 1;
     workers.federationReceivers = 1;
+    workers.initialSyncers = 1;
+    workers.normalSyncers = 1;
 
     enableNginx = true;
 
@@ -191,6 +193,8 @@ in {
         "master/1"
         "fed-sender/1"
         "fed-receiver/1"
+        "init-sync/1"
+        "normal-sync/1"
       ];
     in {
       alias = pkgs.writeTextDir "/config.json"