Extract download URL of kernel package for a given Garden Linux version + architecture

get_kernel_download_url.sh

#!/bin/bash

arch=
version=

while [[ $# -gt 0 ]]; do
    case "$1" in
        --arch)
            arch="$2"
            shift 2
            ;;
        --version)
            version="$2"
            shift 2
            ;;
        *)
            echo "Usage: $0 --arch <arch> --version <version>"
            exit 1
            ;;
    esac
done

if [[ -z "$arch" || -z "$version" ]]; then
    echo "Error: Both --arch and --version are required."
    echo "Usage: $0 --arch <arch> --version <version>"
    exit 1
fi

call_dir=$pwd
tmpdir=$(mktemp -d)
cd $tmpdir

trap 'cd $call_dir && rm -rf "$tmpdir"' EXIT

# Note: silently fails if URl does not exist. gunzip will complain about stdin not in gzip format 
curl -s https://packages.gardenlinux.io/gardenlinux/dists/$version/main/binary-$arch/Packages.gz |  gunzip > Packages


# Meta Package linux-image-$arch is only there to depend on the respective linux-image-<version>-<arch>, so user can just install linux-image-<arch> and gets the respective kernel version installed.
#
kernel_version=$(cat Packages | sed -n "/^Package: linux-image-${arch}$/,/^$/p" | grep "Depends:" | cut -d : -f 2 | cut -d' ' -f 2)


# Construct download Link of linux-image-<version>-<arch> packages. 
pool_url=$(sed -n "/^Package: ${kernel_version}$/,/^$/p" Packages | grep "^Filename:" | cut -d : -f 2 | sed 's/^ *//' | sed 's|^|https://packages.gardenlinux.io/gardenlinux/|' )


echo $pool_url

example:

./get_kernel_download_url.sh --arch arm64 --version 1592.6 

https://packages.gardenlinux.io/gardenlinux/pool/2f1f996fa24923806f9b47725baa4ab780e09530d8c1bfc48e83fd1310dd43ea/linux-image-6.6.78-arm64_6.6.78-0gl0~bp1592_arm64.deb

to inspect content you could do stuff like this

 ./get_kernel_download_url.sh --arch arm64 --version 1592.6 | xargs curl  --output kernel.deb

The kernel.deb can be extracted with ar x kernel.deb, and inside you will find a data.tar.xz, which should contain the kernel config for example