From 0bc9fb54a4e4e71e3da2833e2657896e357ad240 Mon Sep 17 00:00:00 2001
From: Eman Resu <78693624+quatquatt@users.noreply.github.com>
Date: Fri, 15 May 2026 14:58:08 -0400
Subject: [PATCH] lib.systems.parse: avoid toString if no version specified

---
 lib/systems/parse.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/systems/parse.nix b/lib/systems/parse.nix
index 0a69e47972b1..e8e5a7799014 100644
--- a/lib/systems/parse.nix
+++ b/lib/systems/parse.nix
@@ -964,7 +964,8 @@ rec {
 
   mkSystemFromString = s: mkSystemFromSkeleton (mkSkeletonFromList (splitString "-" s));
 
-  kernelName = kernel: kernel.name + toString (kernel.version or "");
+  kernelName =
+    kernel: if kernel ? version then kernel.name + toString kernel.version else kernel.name;
 
   darwinArch = cpu: if cpu.name == "aarch64" then "arm64" else cpu.name;