pyrox.dev
1#!/usr/bin/env bash
2set -e
3
4# Get the latest versions from kernel.org
5LINUXSED='s/.*linux-\([0-9]\+\(.[0-9]\+\)*\).*/\1/p'
6KDATA="$(curl -s https://www.kernel.org | sed -n -e '/Download complete/p')"
7VERSIONS=($(sed -n -e $LINUXSED <<< "$KDATA" | sort -Vr))
8
9# Remove mainline version if there is a stable update
10# Note due to sorting these two will always exist at the bottom
11if grep -q "^${VERSIONS[1]}" <<< "${VERSIONS[0]}"; then
12 VERSIONS=(${VERSIONS[@]:0:1} ${VERSIONS[@]:2})
13fi
14
15# Inspect each file and see if it has the latest version
16NIXPKGS="$(git rev-parse --show-toplevel)"
17ls $NIXPKGS/pkgs/os-specific/linux/kernel | while read FILE; do
18 KERNEL="$(sed -n $LINUXSED <<< "$FILE")"
19 [ -z "$KERNEL" ] && continue
20
21 # Find the matching new kernel version
22 MATCHING=""
23 for V in "${VERSIONS[@]}"; do
24 if grep -q "^$KERNEL" <<< "$V"; then
25 MATCHING="$V"
26 break
27 fi
28 done
29 if [ -z "$MATCHING" ]; then
30 echo "Out-of-support $KERNEL"
31 continue
32 fi
33
34 # Inspect the nix expression to check for changes
35 DATA="$(<$NIXPKGS/pkgs/os-specific/linux/kernel/$FILE)"
36 URL="$(sed -n -e 's/.*url = "\(.*\)";.*/\1/p' <<< "$DATA" | sed -e "s/\${version}/$MATCHING/g")"
37 OLDVER=$(sed -n -e 's/.*version = "\(.*\)".*/\1/p' <<< "$DATA")
38 if [ "$OLDVER" = "$V" ]; then
39 echo "No updates for $KERNEL"
40 continue
41 fi
42
43 # Download the new file for the hash
44 if ! HASH="$(nix-prefetch-url $URL 2>/dev/null)"; then
45 echo "Failed to get hash of $URL"
46 continue
47 fi
48 sed -i "s/sha256 = \".*\"/sha256 = \"$HASH\"/g" $NIXPKGS/pkgs/os-specific/linux/kernel/$FILE
49
50 # Rewrite the expression
51 sed -i -e '/version = /d' -e '/modDirVersion = /d' $NIXPKGS/pkgs/os-specific/linux/kernel/$FILE
52 if grep -q '^[0-9]\+.[0-9]\+$' <<< "$V"; then
53 sed -i "\#buildLinux (args // rec {#a \ modDirVersion = \"${V}.0\";" $NIXPKGS/pkgs/os-specific/linux/kernel/$FILE
54 fi
55 sed -i "\#buildLinux (args // rec {#a \ version = \"$V\";" $NIXPKGS/pkgs/os-specific/linux/kernel/$FILE
56
57 # Commit the changes
58 git add -u $NIXPKGS/pkgs/os-specific/linux/kernel/$FILE
59 git commit -m "kernel: $OLDVER -> $V" >/dev/null 2>&1
60
61 echo "Updated $OLDVER -> $V"
62done