linuxKernel: depend exclusively on elfutils

pkgs/os-specific/linux/kernel/manual-config.nix

@@ -1,5 +1,5 @@
 { lib, stdenv, buildPackages, runCommand, nettools, bc, bison, flex, perl, rsync, gmp, libmpc, mpfr, openssl
-, libelf, cpio, elfutils, zstd, python3Minimal, zlib, pahole, kmod, ubootTools
+, cpio, elfutils, zstd, python3Minimal, zlib, pahole, kmod, ubootTools
 , fetchpatch
 , rustc, rust-bindgen, rustPlatform
 }:
@@ -120,7 +120,7 @@ let
       moduleBuildDependencies = [
         pahole
         perl
-        libelf
+        elfutils
         # module makefiles often run uname commands to find out the kernel version
         (buildPackages.deterministic-uname.override { inherit modDirVersion; })
       ]
@@ -142,13 +142,23 @@ let
       inherit src;
 
       depsBuildBuild = [ buildPackages.stdenv.cc ];
-      nativeBuildInputs = [ perl bc nettools openssl rsync gmp libmpc mpfr zstd python3Minimal kmod ]
-                          ++ optional  needsUbootTools ubootTools
-                          ++ optional  (lib.versionOlder version "5.8") libelf
-                          ++ optionals (lib.versionAtLeast version "4.16") [ bison flex ]
-                          ++ optionals (lib.versionAtLeast version "5.2")  [ cpio pahole zlib ]
-                          ++ optional  (lib.versionAtLeast version "5.8")  elfutils
-                          ++ optionals withRust [ rustc rust-bindgen ];
+      nativeBuildInputs = [
+        perl
+        bc
+        nettools
+        openssl
+        rsync
+        gmp
+        libmpc
+        mpfr
+        elfutils
+        zstd
+        python3Minimal
+        kmod
+      ] ++ optional  needsUbootTools ubootTools
+        ++ optionals (lib.versionAtLeast version "4.16") [ bison flex ]
+        ++ optionals (lib.versionAtLeast version "5.2")  [ cpio pahole zlib ]
+        ++ optionals withRust [ rustc rust-bindgen ];
 
       RUST_LIB_SRC = lib.optionalString withRust rustPlatform.rustLibSrc;
 
@@ -400,9 +410,6 @@ let
     };
 in
 
-assert lib.versionOlder version "5.8" -> libelf != null;
-assert lib.versionAtLeast version "5.8" -> elfutils != null;
-
 stdenv.mkDerivation ((drvAttrs config stdenv.hostPlatform.linux-kernel kernelPatches configfile) // {
   inherit pname version;