Files
calendula/scripts/check_reproducible_release.sh
Jean-Luc Makiola e726db9606 Draw core-time from floret-kit (TimeBridge) via submodule + composite build
Phase 1 of the shared-kit plan: Calendula becomes the second core-time consumer.
floret-kit is embedded as a git submodule and wired with includeBuild, so the
app depends on de.jeanlucmakiola.floret:core-time and Gradle substitutes the
local source module (built from source).

- Remove the app's TimeBridge (Instant <-> epoch millis) + its test; the helpers
  now live in core-time. Repoint the 7 call sites to de.jeanlucmakiola.floret.time.
- Calendula's richer time formatting (TimeFormat, 24h CompositionLocal) stays
  app-local by design.

Reproducible-build handling (Calendula publishes via official F-Droid repro):
- Pin the submodule to a foojay-free kit commit (the resolver would let a build
  fetch a JDK -> non-reproducible; the kit never used a toolchain block).
- Harden scripts/check_reproducible_release.sh to scan the included build's
  Gradle scripts for the toolchain-resolver invariant.
- Draft fdroiddata recipe: submodules: true (else F-Droid checks out an empty
  floret-kit/ and the from-source build fails).
- CI build checkouts fetch submodules recursively.

Clean composite build + unit tests + lintDebug + repro guard all green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-27 23:47:40 +02:00

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#!/usr/bin/env bash
# Reproducibility guard for the official F-Droid repo (de.jeanlucmakiola.calendula).
#
# F-Droid only republishes OUR signed binary if a from-source build reproduces it
# byte-for-byte and the binary carries no extra signing blocks. If any invariant
# below regresses, the official repo silently stalls on the last good version
# (fails safe — but you'd be stuck on an old release without noticing). So fail
# loudly here, on every PR.
#
# Each invariant was learned from a real fdroiddata CI rejection (see
# docs/fdroid-official/ and the v2.7.3 -> v2.7.5 history):
# 1. vcsInfo { include = false } — else AGP embeds env-dependent git
# metadata (META-INF/version-control-info.textproto) -> not reproducible.
# 2. no foojay toolchain resolver — F-Droid's offline source scanner
# rejects org.gradle.toolchains.foojay-resolver (it can fetch a JDK over
# the network at build time).
# 3. dependenciesInfo { includeInApk = false } — else AGP embeds a "Dependency
# metadata" block (id 0x504b4453) in the APK Signing Block, which F-Droid's
# binary scanner rejects as an extra signing block.
set -euo pipefail
APP="app/build.gradle.kts"
SETTINGS="settings.gradle.kts"
fail=0
# 1. AGP VCS-info must be disabled on the release build. -z reads the whole file
# as one record so the match can span newlines; [^}] keeps it inside the block.
if grep -Pzoq 'vcsInfo\s*\{[^}]*include\s*=\s*false' "$APP"; then
echo "OK: vcsInfo { include = false } — no env-dependent VCS metadata embedded."
else
echo "ERROR: '$APP' release build is missing 'vcsInfo { include = false }'." >&2
echo " AGP would embed version-control-info.textproto, breaking reproducibility." >&2
fail=1
fi
# 2. The foojay toolchain resolver must not be present in any Gradle script.
# This includes the floret-kit submodule: it's an included build (composite
# build via `includeBuild`), so F-Droid evaluates its Gradle scripts too when
# building from source — the same offline-scanner bar applies to it.
gradle_files=("$SETTINGS" "$APP")
[ -f build.gradle.kts ] && gradle_files+=(build.gradle.kts)
if [ -d floret-kit ]; then
while IFS= read -r f; do gradle_files+=("$f"); done \
< <(find floret-kit -name '*.gradle.kts' -not -path '*/build/*')
fi
if grep -qi 'foojay' "${gradle_files[@]}"; then
echo "ERROR: foojay toolchain resolver found in: $(grep -li foojay "${gradle_files[@]}" | tr '\n' ' ')" >&2
echo " F-Droid's source scanner rejects org.gradle.toolchains.foojay-resolver" >&2
echo " (it can fetch a JDK over the network). Remove the plugin." >&2
fail=1
else
echo "OK: no foojay toolchain resolver — offline build scanner stays happy."
fi
# 3. AGP dependency-metadata block must not be embedded in the APK.
if grep -Pzoq 'dependenciesInfo\s*\{[^}]*includeInApk\s*=\s*false' "$APP"; then
echo "OK: dependenciesInfo { includeInApk = false } — no extra APK signing block."
else
echo "ERROR: '$APP' is missing 'dependenciesInfo { includeInApk = false }'." >&2
echo " AGP would embed a 'Dependency metadata' block (0x504b4453) in the APK" >&2
echo " Signing Block, which F-Droid's binary scanner rejects." >&2
fail=1
fi
if [ "$fail" -ne 0 ]; then
echo >&2
echo "Reproducible-release invariant(s) violated — official F-Droid publishing would" >&2
echo "stall. Fix the above before merging. See docs/fdroid-official/." >&2
exit 1
fi
echo "All reproducible-release invariants hold."