#!/usr/bin/env bash set -e # Get the latest versions from kernel.org LINUXSED='s/.*linux-\([0-9]\+\(.[0-9]\+\)*\).*/\1/p' KDATA="$(curl -s https://www.kernel.org | sed -n -e '/Download complete/p')" VERSIONS=($(sed -n -e $LINUXSED <<< "$KDATA" | sort -Vr)) # Remove mainline version if there is a stable update # Note due to sorting these two will always exist at the bottom if grep -q "^${VERSIONS[1]}" <<< "${VERSIONS[0]}"; then VERSIONS=(${VERSIONS[@]:0:1} ${VERSIONS[@]:2}) fi # Inspect each file and see if it has the latest version NIXPKGS="$(git rev-parse --show-toplevel)" ls $NIXPKGS/pkgs/os-specific/linux/kernel | while read FILE; do KERNEL="$(sed -n $LINUXSED <<< "$FILE")" [ -z "$KERNEL" ] && continue # Find the matching new kernel version MATCHING="" for V in "${VERSIONS[@]}"; do if grep -q "^$KERNEL" <<< "$V"; then MATCHING="$V" break fi done if [ -z "$MATCHING" ]; then echo "Out-of-support $KERNEL" continue fi # Inspect the nix expression to check for changes DATA="$(<$NIXPKGS/pkgs/os-specific/linux/kernel/$FILE)" URL="$(sed -n -e 's/.*url = "\(.*\)";.*/\1/p' <<< "$DATA" | sed -e "s/\${version}/$MATCHING/g")" OLDVER=$(sed -n -e 's/.*version = "\(.*\)".*/\1/p' <<< "$DATA") if [ "$OLDVER" = "$V" ]; then echo "No updates for $KERNEL" continue fi # Download the new file for the hash if ! HASH="$(nix-prefetch-url $URL 2>/dev/null)"; then echo "Failed to get hash of $URL" continue fi sed -i "s/sha256 = \".*\"/sha256 = \"$HASH\"/g" $NIXPKGS/pkgs/os-specific/linux/kernel/$FILE # Rewrite the expression sed -i -e '/version = /d' -e '/modDirVersion = /d' $NIXPKGS/pkgs/os-specific/linux/kernel/$FILE if grep -q '^[0-9]\+.[0-9]\+$' <<< "$V"; then sed -i "\#buildLinux (args // rec {#a \ modDirVersion = \"${V}.0\";" $NIXPKGS/pkgs/os-specific/linux/kernel/$FILE fi sed -i "\#buildLinux (args // rec {#a \ version = \"$V\";" $NIXPKGS/pkgs/os-specific/linux/kernel/$FILE # Commit the changes git add -u $NIXPKGS/pkgs/os-specific/linux/kernel/$FILE git commit -m "linux: $OLDVER -> $V" >/dev/null 2>&1 echo "Updated $OLDVER -> $V" done