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#!/usr/bin/env bash
#
# This script checks if the build.zig.zon.nix file is up-to-date.
# If the `--update` flag is passed, it will update all necessary
# files to be up to date.
#
# The files owned by this are:
#
# - build.zig.zon.nix
# - build.zig.zon.txt
# - build.zig.zon.json
# - flatpak/zig-packages.json
#
# All of these are auto-generated and should not be edited manually.
# Nothing in this script should fail.
set -e
WORK_DIR=$(mktemp -d)
if [[ ! "$WORK_DIR" || ! -d "$WORK_DIR" ]]; then
echo "could not create temp dir"
exit 1
fi
function cleanup {
rm -rf "$WORK_DIR"
}
trap cleanup EXIT
help() {
echo ""
echo "To fix, please (manually) re-run the script from the repository root,"
echo "commit, and submit a PR with the update:"
echo ""
echo " ./nix/build-support/check-zig-cache.sh --update"
echo " git add build.zig.zon.nix build.zig.zon.txt build.zig.zon.json flatpak/zig-packages.json"
echo " git commit -m \"nix: update build.zig.zon.nix build.zig.zon.txt build.zig.zon.json flatpak/zig-packages.json\""
echo ""
}
ROOT="$(realpath "$(dirname "$0")/../../")"
BUILD_ZIG_ZON="$ROOT/build.zig.zon"
BUILD_ZIG_ZON_NIX="$ROOT/build.zig.zon.nix"
BUILD_ZIG_ZON_TXT="$ROOT/build.zig.zon.txt"
BUILD_ZIG_ZON_JSON="$ROOT/build.zig.zon.json"
ZIG_PACKAGES_JSON="$ROOT/flatpak/zig-packages.json"
if [ -f "${BUILD_ZIG_ZON_NIX}" ]; then
OLD_HASH_NIX=$(sha512sum "${BUILD_ZIG_ZON_NIX}" | awk '{print $1}')
elif [ "$1" != "--update" ]; then
echo -e "\nERROR: build.zig.zon.nix missing."
help
exit 1
fi
if [ -f "${BUILD_ZIG_ZON_TXT}" ]; then
OLD_HASH_TXT=$(sha512sum "${BUILD_ZIG_ZON_TXT}" | awk '{print $1}')
elif [ "$1" != "--update" ]; then
echo -e "\nERROR: build.zig.zon.txt missing."
help
exit 1
fi
if [ -f "${BUILD_ZIG_ZON_JSON}" ]; then
OLD_HASH_JSON=$(sha512sum "${BUILD_ZIG_ZON_JSON}" | awk '{print $1}')
elif [ "$1" != "--update" ]; then
echo -e "\nERROR: build.zig.zon.json missing."
help
exit 1
fi
if [ -f "${ZIG_PACKAGES_JSON}" ]; then
OLD_HASH_FLATPAK=$(sha512sum "${ZIG_PACKAGES_JSON}" | awk '{print $1}')
elif [ "$1" != "--update" ]; then
echo -e "\nERROR: flatpak/zig-packages.json missing."
help
exit 1
fi
zon2nix "$BUILD_ZIG_ZON" --16 --nix "$WORK_DIR/build.zig.zon.nix" --txt "$WORK_DIR/build.zig.zon.txt" --json "$WORK_DIR/build.zig.zon.json" --flatpak "$WORK_DIR/zig-packages.json"
alejandra --quiet "$WORK_DIR/build.zig.zon.nix"
prettier --log-level warn --write "$WORK_DIR/build.zig.zon.json"
prettier --log-level warn --write "$WORK_DIR/zig-packages.json"
NEW_HASH_NIX=$(sha512sum "$WORK_DIR/build.zig.zon.nix" | awk '{print $1}')
NEW_HASH_TXT=$(sha512sum "$WORK_DIR/build.zig.zon.txt" | awk '{print $1}')
NEW_HASH_JSON=$(sha512sum "$WORK_DIR/build.zig.zon.json" | awk '{print $1}')
NEW_HASH_FLATPAK=$(sha512sum "$WORK_DIR/zig-packages.json" | awk '{print $1}')
if [ "${OLD_HASH_NIX}" == "${NEW_HASH_NIX}" ] && [ "${OLD_HASH_TXT}" == "${NEW_HASH_TXT}" ] && [ "${OLD_HASH_JSON}" == "${NEW_HASH_JSON}" ] && [ "${OLD_HASH_FLATPAK}" == "${NEW_HASH_FLATPAK}" ]; then
echo -e "\nOK: build.zig.zon.nix unchanged."
echo -e "OK: build.zig.zon.txt unchanged."
echo -e "OK: build.zig.zon.json unchanged."
echo -e "OK: flatpak/zig-packages.json unchanged."
exit 0
elif [ "$1" != "--update" ]; then
echo -e "\nERROR: build.zig.zon.nix, build.zig.zon.txt, or build.zig.zon.json needs to be updated.\n"
echo " * Old build.zig.zon.nix hash: ${OLD_HASH_NIX}"
echo " * New build.zig.zon.nix hash: ${NEW_HASH_NIX}"
echo " * Old build.zig.zon.txt hash: ${OLD_HASH_TXT}"
echo " * New build.zig.zon.txt hash: ${NEW_HASH_TXT}"
echo " * Old build.zig.zon.json hash: ${OLD_HASH_JSON}"
echo " * New build.zig.zon.json hash: ${NEW_HASH_JSON}"
echo " * Old flatpak/zig-packages.json hash: ${OLD_HASH_FLATPAK}"
echo " * New flatpak/zig-packages.json hash: ${NEW_HASH_FLATPAK}"
help
exit 1
else
mv "$WORK_DIR/build.zig.zon.nix" "$BUILD_ZIG_ZON_NIX"
echo -e "\nOK: build.zig.zon.nix updated."
mv "$WORK_DIR/build.zig.zon.txt" "$BUILD_ZIG_ZON_TXT"
echo -e "OK: build.zig.zon.txt updated."
mv "$WORK_DIR/build.zig.zon.json" "$BUILD_ZIG_ZON_JSON"
echo -e "OK: build.zig.zon.json updated."
mv "$WORK_DIR/zig-packages.json" "$ZIG_PACKAGES_JSON"
echo -e "OK: flatpak/zig-packages.json updated."
exit 0
fi
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