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nixpkgs/pkgs/os-specific/linux/kernel/update.sh
Matthieu Coudron f620b1b693 kernel: buildLinux replaces import ./generic.nix
- defined buildLinux as generic.nix instead of manual-config.nix. This
makes kernel derivations a tad more similar to your typical derivations.
- moved $buildRoot to within the source folder, this way it doesn't have to be created before the unpackPhase
and make it easier to work on kernel source without running the unpackPhase
2018-02-07 10:07:13 +09:00

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#!/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 "kernel: $OLDVER -> $V" >/dev/null 2>&1
echo "Updated $OLDVER -> $V"
done