upd

packages/linux-cachyos/default.nix

@@ -4,8 +4,12 @@
   lib,
   callPackage,
   zfs_2_3,
+  # 1. Add 'inputs' generic argument (passed by Snowfall Lib)
+  inputs ? { },
+  # 2. Make 'self' optional, defaulting to inputs.self (handles both Overlay and Snowfall cases)
+  self ? inputs.self,
   ...
-}@inputs:
+}@args: # 3. Rename this capture from 'inputs' to 'args' to avoid variable name collision
 
 let
   inherit (stdenv) isx86_64 isLinux;
@@ -21,10 +25,11 @@ let
     taste = "linux-cachyos";
     configPath = ./config-nix/cachyos-lto.x86_64-linux.nix;
 
-    inherit (import ./lib/llvm-pkgs.nix inputs) callPackage;
+    # Pass the unified arguments (including the resolved 'self') to llvm-pkgs
+    inherit (import ./lib/llvm-pkgs.nix (args // { inherit self; })) callPackage;
     useLTO = "thin";
 
-    packagesExtend = import ./lib/llvm-module-overlay.nix inputs;
+    packagesExtend = import ./lib/llvm-module-overlay.nix args;
 
     zfsOverride = {
       inherit (pkgs)
@@ -75,7 +80,7 @@ let
       }
     else
       {
-        callPackage ? inputs.callPackage,
+        callPackage ? args.callPackage,
         ...
       }@attrs:
       callPackage ./packages-for.nix (
@@ -175,4 +180,4 @@ in
     };
     postPatch = builtins.replaceStrings [ "grep --quiet '^Linux-M" ] [ "# " ] prevAttrs.postPatch;
   });
-}
+}