fix: try enabling memcache for nextcloud

sp-modules/nextcloud/flake.nix

@@ -18,6 +18,7 @@
       backupDescription = "All the files and other data stored in Nextcloud.";
       systemdServices = [
         "phpfpm-nextcloud.service"
+        "redis-nextcloud.service"
       ];
       folders = [
         "/var/lib/nextcloud"

sp-modules/nextcloud/module.nix

@@ -184,6 +184,8 @@ in
 
         phpOptions.display_errors = "Off";
 
+        configureRedis = true;
+
         settings = {
           # further forces Nextcloud to use HTTPS
           overwriteprotocol = "https";