halkyon/tool/pre-push

#!/usr/bin/env bash
# The pre-push hook: commits going to main must be signed as deploying it requires
# (tool/check_signatures.sh, a moment), then the checks CI runs (tool/check.dart,
# minutes), but for a push of release commits alone (below). A push only goes through
# when both pass.
#
# Install it in a fresh clone:  ln -s ../../tool/pre-push .git/hooks/pre-push
# Skip it for one push:         git push --no-verify
set -euo pipefail
cd "$(git rev-parse --show-toplevel)"

# As a hook in a worktree, git hands this its GIT_DIR, an absolute path to the worktree's
# folder in the main repository. pub runs git with -C on its git dependencies' caches, which
# GIT_DIR overrides, so it judged the workspace's resolution stale, resolved it with dart
# alone and failed ("halkyon_learn_flutter requires the Flutter SDK"; 2026-10-16). Nothing
# below needs them: git finds the repository from the folder it runs in.
unset GIT_DIR GIT_WORK_TREE GIT_INDEX_FILE GIT_COMMON_DIR GIT_OBJECT_DIRECTORY GIT_PREFIX

# git's arguments (the remote) and stdin (the refs pushed) go to the signature check, and
# to the question whether the push brings release commits alone: a release's version
# commit changes an app's version and its texts of what's new, nothing the checks look at,
# so it goes without them (tool/release_push.dart; decided 3 Nov 2026, so that releases in
# a row don't run the checks once each). Signed or not is checked all the same.
refs=$(cat)
printf '%s\n' "$refs" | tool/check_signatures.sh "$@"
if printf '%s\n' "$refs" | dart run tool/release_push.dart "$@"; then
  exit 0
fi
exec dart run tool/check.dart