From 696f7401aa0c217b27e9d4b372f93abafd168854 Mon Sep 17 00:00:00 2001
From: Lan Tian <xuyh0120@outlook.com>
Date: Sun, 28 Dec 2025 02:15:07 -0800
Subject: [PATCH] Move LTO settings to cachySettings.nix

---
 kernel-cachyos/cachySettings.nix | 18 ++++++++++++++++++
 kernel-cachyos/mkCachyKernel.nix | 10 +---------
 2 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/kernel-cachyos/cachySettings.nix b/kernel-cachyos/cachySettings.nix
index 088c093..061386b 100644
--- a/kernel-cachyos/cachySettings.nix
+++ b/kernel-cachyos/cachySettings.nix
@@ -42,6 +42,24 @@ with lib.kernel;
     HZ = freeform hz;
   });
 
+  lto = {
+    none = {
+      LTO_NONE = yes;
+      LTO_CLANG_THIN = no;
+      LTO_CLANG_FULL = no;
+    };
+    thin = {
+      LTO_NONE = no;
+      LTO_CLANG_THIN = yes;
+      LTO_CLANG_FULL = no;
+    };
+    full = {
+      LTO_NONE = no;
+      LTO_CLANG_THIN = no;
+      LTO_CLANG_FULL = yes;
+    };
+  };
+
   performanceGovernor = {
     CPU_FREQ_DEFAULT_GOV_SCHEDUTIL = no;
     CPU_FREQ_DEFAULT_GOV_PERFORMANCE = yes;
diff --git a/kernel-cachyos/mkCachyKernel.nix b/kernel-cachyos/mkCachyKernel.nix
index 97ff885..ce54a85 100644
--- a/kernel-cachyos/mkCachyKernel.nix
+++ b/kernel-cachyos/mkCachyKernel.nix
@@ -54,11 +54,6 @@ lib.makeOverridable (
     # Additional args are passed to buildLinux.
     ...
   }@args:
-  assert lib.assertOneOf "LTO Valid Options" lto [
-    "none"
-    "thin"
-    "full"
-  ];
   let
     helpers = callPackage ../helpers.nix { };
     inherit (helpers) stdenvLLVM ltoMakeflags;
@@ -118,15 +113,12 @@ lib.makeOverridable (
         OVERLAY_FS_XINO_AUTO = no;
         OVERLAY_FS_METACOPY = no;
         OVERLAY_FS_DEBUG = no;
-
-        LTO_NONE = if lto == "none" then lib.kernel.yes else lib.kernel.no;
-        LTO_CLANG_THIN = if lto == "thin" then lib.kernel.yes else lib.kernel.no;
-        LTO_CLANG_FULL = if lto == "full" then lib.kernel.yes else lib.kernel.no;
       })
 
       # Apply CachyOS specific settings
       // (lib.mapAttrs (_: lib.mkForce) (
         cachySettings.common
+        // (cachySettings.lto."${lto}")
         // (lib.optionalAttrs (cpusched != null) cachySettings.cpusched."${cpusched}")
         // (lib.optionalAttrs kcfi cachySettings.kcfi)
         // (lib.optionalAttrs (hzTicks != null) cachySettings.hzTicks."${hzTicks}")