tjh.dev
1#! /usr/bin/env nix-shell
2#! nix-shell -i bash -p coreutils moreutils curl jq nix-prefetch-git cargo gnugrep gawk nix
3# shellcheck shell=bash
4
5# You must run it from the root directory of a nixpkgs repo checkout
6
7set -euo pipefail
8
9versionJson="$(realpath "./pkgs/os-specific/linux/scx/version.json")"
10nixFolder="$(dirname "$versionJson")"
11
12localVer=$(jq -r .scx.version <$versionJson)
13latestVer=$(curl -s https://api.github.com/repos/sched-ext/scx/releases/latest | jq -r .tag_name | sed 's/v//g')
14
15if [ "$localVer" == "$latestVer" ]; then
16 exit 0
17fi
18
19latestHash=$(nix-prefetch-git https://github.com/sched-ext/scx.git --rev refs/tags/v$latestVer --quiet | jq -r .hash)
20
21tmp=$(mktemp -d)
22trap 'rm -rf -- "${tmp}"' EXIT
23
24git clone --depth 1 --branch "v$latestVer" https://github.com/sched-ext/scx.git "$tmp/scx"
25
26pushd "$tmp/scx"
27
28bpftoolRev=$(grep 'bpftool_commit =' ./meson.build | awk -F"'" '{print $2}')
29bpftoolHash=$(nix-prefetch-git https://github.com/libbpf/bpftool.git --rev $bpftoolRev --fetch-submodules --quiet | jq -r .hash)
30
31libbpfRev=$(grep 'libbpf_commit =' ./meson.build | awk -F"'" '{print $2}')
32libbpfHash=$(nix-prefetch-git https://github.com/libbpf/libbpf.git --rev $libbpfRev --fetch-submodules --quiet | jq -r .hash)
33
34jq \
35 --arg latestVer "$latestVer" --arg latestHash "$latestHash" \
36 --arg bpftoolRev "$bpftoolRev" --arg bpftoolHash "$bpftoolHash" \
37 --arg libbpfRev "$libbpfRev" --arg libbpfHash "$libbpfHash" \
38 ".scx.version = \$latestVer | .scx.hash = \$latestHash |\
39 .bpftool.rev = \$bpftoolRev | .bpftool.hash = \$bpftoolHash |\
40 .libbpf.rev = \$libbpfRev | .libbpf.hash = \$libbpfHash" \
41 "$versionJson" | sponge $versionJson
42
43echo "scx: $localVer -> $latestVer"
44
45echo "Updating cargoHash. This may take a while..."
46popd
47cargoHash=$((nix-build --attr scx.rustscheds 2>&1 || true) | awk '/got/{print $2}')
48
49if [ -z "$cargoHash" ]; then
50 echo "Failed to get cargoHash, please update it manually"
51 exit 0
52fi
53
54jq \
55 --arg cargoHash "$cargoHash" \
56 ".scx.cargoHash = \$cargoHash" \
57 "$versionJson" | sponge $versionJson