sys-kernel/asahi-kernel: add asahi-kernel package

sys-kernel/asahi-kernel/asahi-kernel-6.2.0_p12.ebuild

@@ -0,0 +1,92 @@
+# Copyright 2020-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+# shellcheck shell=bash
+
+EAPI=8
+
+inherit kernel-build toolchain-funcs
+
+# https://github.com/AsahiLinux/PKGBUILDs/blob/main/linux-asahi/config
+PKGBUILD_CONFIG_COMMIT="edc6e0c33d5597cc56d63eb22eaa0d0b11ff4bd7"
+PKGBUILD_CONFIG_VER="6.2.0"
+PKGBUILD_CONFIG_FILE_NAME="linux-asahi.config.${PKGBUILD_CONFIG_VER}"
+# https://github.com/AsahiLinux/PKGBUILDs/blob/main/linux-asahi/config.edge
+PKGBUILD_EDGE_CONFIG_FILE_NAME="${PKGBUILD_CONFIG_FILE_NAME}-edge"
+
+GENTOO_CONFIG_VER="g4"
+
+# Tag 'asahi-w.x-z'     = PV="w.x_pz"
+# Tag 'asahi-w.x-rcN-z' = PV="w.x_rcN_pz"
+MY_PV="${PV/_rc/-rc}"
+MY_PV="${MY_PV/_p/-}"
+
+DESCRIPTION="Asahi Linux testing kernel for Apple silicon-based Macs built from sources"
+HOMEPAGE="https://asahilinux.org/"
+SRC_URI="
+	https://github.com/AsahiLinux/linux/archive/refs/tags/asahi-${MY_PV}.tar.gz
+	https://raw.githubusercontent.com/AsahiLinux/PKGBUILDs/${PKGBUILD_CONFIG_COMMIT}/linux-asahi/config
+		-> ${PKGBUILD_CONFIG_FILE_NAME}
+	https://raw.githubusercontent.com/AsahiLinux/PKGBUILDs/${PKGBUILD_CONFIG_COMMIT}/linux-asahi/config.edge
+		-> ${PKGBUILD_EDGE_CONFIG_FILE_NAME}
+	https://github.com/projg2/gentoo-kernel-config/archive/${GENTOO_CONFIG_VER}.tar.gz
+		-> gentoo-kernel-config-${GENTOO_CONFIG_VER}.tar.gz
+"
+S="${WORKDIR}/linux-asahi-${MY_PV}"
+
+LICENSE="GPL-2"
+KEYWORDS="~arm64"
+# The 'debug' USE flag is required by kernel-build_src_install
+IUSE="debug"
+
+BDEPEND="
+	debug? ( dev-util/pahole )
+"
+
+PDEPEND="
+	>=virtual/dist-kernel-${PV}
+"
+
+src_prepare() {
+  default
+
+  cp "${DISTDIR}/${PKGBUILD_CONFIG_FILE_NAME}" .config ||
+    die "Failed to copy kernel configuration"
+
+  # Avoid "Kernel release mismatch" error from kernel-install_pkg_preinst
+  # by adding required version components to a localversion* file, so users
+  # can still set their own CONFIG_LOCALVERSION value in savedconfig or
+  # /etc/kernel/config.d/*.config without getting the same error again
+  if [[ ${PV} == *_p* ]]; then
+    local localversion=""
+    if [[ ${PV} == *_rc* ]]; then
+      localversion+="_"
+    else
+      localversion+="-"
+    fi
+    localversion+="p${PV##*_p}"
+    echo "${localversion}" >localversion.00-gentoo ||
+      die "Failed to write local version preset"
+  fi
+
+  local edge_conf_path="${DISTDIR}/${PKGBUILD_EDGE_CONFIG_FILE_NAME}"
+  local myversion="-edge-dist"
+  local ver_conf_path="${T}/version.config"
+  echo "CONFIG_LOCALVERSION=\"${myversion}\"" >"${ver_conf_path}" ||
+    die "Failed to write local version config"
+
+  local merge_configs=(
+    "${edge_conf_path}"
+    "${ver_conf_path}"
+  )
+
+  local dist_conf_path="${WORKDIR}/gentoo-kernel-config-${GENTOO_CONFIG_VER}"
+  use !debug && merge_configs+=("${dist_conf_path}/no-debug.config")
+
+  kernel-build_merge_configs "${merge_configs[@]}"
+}
+
+src_install() {
+  # Override DTBs installation path for sys-apps/asahi-scripts::asahi
+  export INSTALL_DTBS_PATH="${ED}/usr/src/linux-${PV}${KV_LOCALVERSION}/arch/$(tc-arch-kernel)/boot/dts"
+  kernel-build_src_install
+}

sys-kernel/asahi-kernel/metadata.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>jared@rgst.io</email>
+		<name>Jared Allard</name>
+	</maintainer>
+	<upstream>
+		<bugs-to>https://github.com/AsahiLinux/linux/issues/70</bugs-to>
+		<remote-id type="github">AsahiLinux/linux</remote-id>
+	</upstream>
+	<use>
+		<flag name="initramfs">Build initramfs along with the kernel.</flag>
+	</use>
+</pkgmetadata>