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