public-cof: fix NC encryption

machines/public-cof/nextcloud.nix

@@ -6,6 +6,13 @@
     https = true;
 
     package = pkgs.nextcloud25;
+    # OpenSSL 3.0.x breaks RC4 encryption for NextCloud
+    # But we enabled encryption for NextCloud
+    # Therefore...
+    phpPackage = lib.mkForce (pkgs.php81.withExtensions ({ enabled, all }: 
+      (lib.filter (e: e != pkgs.php81.extensions.openssl) enabled)
+      ++ [ (all.openssl.override { buildInputs = [ pkgs.openssl_1_1 ]; }) ]
+    ));
 
     config = {
       overwriteProtocol = "https";