trying to adapt cachyos kernel from zena linux

files/scripts/cachyos-kernel.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+# Replaces the stock Fedora kernel with the CachyOS LTO kernel.
+# CachyOS LTO kernel is compiled with Link-Time Optimization and ships
+# sched-ext (SCX) support, giving lower latency for realtime audio workloads.
+#
+# Adapted from the Zena project (https://github.com/zena-linux/zena),
+# specifically build-scripts/modules/base/kernel.sh.
+# Zena is licensed under the Apache License 2.0.
+# Credit to the Zena contributors: https://github.com/zena-linux/zena/graphs/contributors
+
+set -ouex pipefail
+
+shopt -s nullglob
+
+KERNEL_PACKAGES=(
+  kernel-cachyos-lto
+  kernel-cachyos-lto-core
+  kernel-cachyos-lto-devel-matched
+  kernel-cachyos-lto-modules
+)
+
+# Disable kernel install hooks so the custom kernel installs cleanly into the image
+pushd /usr/lib/kernel/install.d
+printf '%s\n' '#!/bin/sh' 'exit 0' > 05-rpmostree.install
+printf '%s\n' '#!/bin/sh' 'exit 0' > 50-dracut.install
+chmod +x 05-rpmostree.install 50-dracut.install
+popd
+
+# Remove stock Fedora kernel packages
+for pkg in kernel kernel-core kernel-modules kernel-modules-core; do
+    rpm --erase "$pkg" --nodeps || true
+done
+
+# Remove leftover kernel module directory
+CURRENT_MODULES=$(ls /usr/lib/modules | head -n1)
+if [ -n "$CURRENT_MODULES" ]; then
+    rm -rf "/usr/lib/modules/$CURRENT_MODULES"
+fi
+
+# Install the CachyOS LTO kernel (repos were added via the preceding dnf module)
+dnf5 -y install "${KERNEL_PACKAGES[@]}"
+
+# Version-lock to prevent the kernel from being overwritten by base image updates
+dnf5 versionlock add "${KERNEL_PACKAGES[@]}" || true
+
+# /boot is not used in atomic container images
+rm -rf /boot/*