ghostty/nix/build-support/check-zig-cache.sh
Jeffrey C. Ollie 3a8c934b19 nix: use zig2nix to manage nix cache/deps
This brings the internal package more in line with how the nixpkgs
package is built. It also handles recursive dependencies better than the
current system.
2025-02-11 08:25:34 -08:00

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#!/usr/bin/env bash
# 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-hash.sh --update"
echo " git add build.zig.zon.nix"
echo " git commit -m \"nix: update build.zig.zon.nix\""
echo ""
}
BUILD_ZIG_ZON="$(realpath "$(dirname "$0")/../../build.zig.zon")"
BUILD_ZIG_ZON_LOCK="$(realpath "$(dirname "$0")/../../build.zig.zon2json-lock")"
BUILD_ZIG_ZON_NIX="$(realpath "$(dirname "$0")/../../build.zig.zon.nix")"
if [ -f "${BUILD_ZIG_ZON_NIX}" ]; then
OLD_HASH=$(sha512sum "${BUILD_ZIG_ZON_NIX}" | awk '{print $1}')
elif [ "$1" != "--update" ]; then
echo -e "\nERROR: build.zig.zon.nix missing."
help
exit 1
fi
rm -f "$BUILD_ZIG_ZON_LOCK"
zon2nix "$BUILD_ZIG_ZON" > "$WORK_DIR/build.zig.zon.nix"
alejandra --quiet "$WORK_DIR/build.zig.zon.nix"
rm -f "$BUILD_ZIG_ZON_LOCK"
NEW_HASH=$(sha512sum "$WORK_DIR/build.zig.zon.nix" | awk '{print $1}')
if [ "${OLD_HASH}" == "${NEW_HASH}" ]; then
echo -e "\nOK: build.zig.zon.nix unchanged."
exit 0
elif [ "$1" != "--update" ]; then
echo -e "\nERROR: build.zig.zon.nix needs to be updated."
echo ""
echo " * Old hash: ${OLD_HASH}"
echo " * New hash: ${NEW_HASH}"
help
exit 1
else
mv "$WORK_DIR/build.zig.zon.nix" "$BUILD_ZIG_ZON_NIX"
echo -e "\nOK: build.zig.zon.nix updated."
exit 0
fi