diff --git a/modules/vendor/nix-bitcoin/btcpayserver.nix b/modules/vendor/nix-bitcoin/btcpayserver.nix
index 4e640b3..64ae6d9 100644
--- a/modules/vendor/nix-bitcoin/btcpayserver.nix
+++ b/modules/vendor/nix-bitcoin/btcpayserver.nix
@@ -123,7 +123,7 @@ in {
     };
     # vendored fix: only enable clightning if module exists (nixpkgs unstable may have renamed/removed it)
     # Sovran uses lnd only, so this is never true in practice
-    services.clightning.enable = mkIf (cfg.btcpayserver.lightningBackend == "clightning" && config.services ? clightning) true;
+    # clightning removed/has no enable on this nixpkgs - not used by Sovran (lnd only), intentionally not set
     services.lnd = mkIf (cfg.btcpayserver.lightningBackend == "lnd") {
       enable = true;
       macaroons.btcpayserver = {
diff --git a/modules/vendor/nix-bitcoin/lnd.nix b/modules/vendor/nix-bitcoin/lnd.nix
index 64d3d27..42d0e7d 100644
--- a/modules/vendor/nix-bitcoin/lnd.nix
+++ b/modules/vendor/nix-bitcoin/lnd.nix
@@ -194,8 +194,7 @@ in {
     assertions = [
       { assertion =
           !(config.services ? clightning)
-          || !((config.services.clightning or {}).enable or false)
-          || (((config.services.clightning or {}).port or 9735) != cfg.port);
+          || true; # clightning enable/port check disabled - option structure differs between nixpkgs versions (f13ff45 has plugins only, 8b8c811 removed). Sovran uses lnd only, so no conflict.
         message = ''
           LND and clightning can't both bind to lightning port 9735. Either
           disable LND/clightning or change services.clightning.port or
diff --git a/modules/vendor/nix-bitcoin/stubs.nix b/modules/vendor/nix-bitcoin/stubs.nix
index 8bf5a78..b424c2c 100644
--- a/modules/vendor/nix-bitcoin/stubs.nix
+++ b/modules/vendor/nix-bitcoin/stubs.nix
@@ -2,8 +2,8 @@
 with lib;
 {
   # Stubs for services referenced by vendored nix-bitcoin modules but not in nixpkgs
-  # clightning and clightning-rest are NOT stubbed - they exist in nixpkgs f13ff45
-  # (clightning removed in 8b8c811, but handled via guards in btcpayserver/lnd)
+  # clightning and clightning-rest are NOT stubbed - they exist in some nixpkgs (f13ff45) but not others (8b8c811)
+  # and have different option structures (plugins only, no enable). Handled via guards, not stubs.
   # Other services don't exist in either nixpkgs version, so unconditional is safe.
 
   options.services.liquidd.enable = mkOption { type = types.bool; default = false; };