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Merge pull request #872 from permissionlesstech/codex/fix-reproducible-aab-mapping

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Fix reproducible R8 mapping output
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callebtc 2026-08-11 19:57:31 +02:00 committed by GitHub
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2 changed files with 13 additions and 6 deletions
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16
docs/reproducible-builds.md
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@ -31,10 +31,12 @@ GitHub/Google Play publication checklist.
The build uses a clean source tree, an isolated Gradle user home, UTC, a stable
locale, `SOURCE_DATE_EPOCH` from the Git commit, no Gradle build or configuration
cache, fresh tasks, and a non-incremental in-process Kotlin compiler. Native
builds remap source paths and release validation rejects host paths in packaged
libraries. The container overlays a canonical `local.properties`, so an ignored
Android Studio file cannot redirect Gradle to a host-specific SDK.
cache, fresh tasks, a non-incremental in-process Kotlin compiler, and R8's
deterministic-debugging mode. The R8 mode uses one compiler thread and disables
randomized input shuffling so the ProGuard map embedded in each AAB is stable.
Native builds remap source paths and release validation rejects host paths in
packaged libraries. The container overlays a canonical `local.properties`, so
an ignored Android Studio file cannot redirect Gradle to a host-specific SDK.
AGP's embedded VCS record is disabled because its Git discovery depends on the
host checkout layout. The canonical `BUILDINFO.json` and GitHub provenance
@ -54,8 +56,10 @@ The authoritative pins are:
## Reproduce a release locally
Requirements are Git, Docker with Linux/amd64 support, and enough free space for
the Android and Gradle images and dependencies.
Requirements are Git, Docker with Linux/amd64 support, more than 8 GiB of memory
available to the Docker VM (16 GiB recommended), and enough free space for the
Android and Gradle images and dependencies. R8's single-threaded deterministic
mode can exceed an 8 GiB Docker memory limit while optimizing the phone app.
```bash
git clone https://github.com/permissionlesstech/bitchat-android.git

3
tools/reproducible-builds/build-release.sh
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@ -42,6 +42,9 @@ if ! [[ "$SOURCE_DATE_EPOCH" =~ ^[0-9]+$ ]]; then
fi
gradle_args=(
# R8 otherwise randomizes input traversal and uses multiple compiler threads.
# The optimized DEX can still match while its embedded ProGuard map differs.
-Dcom.android.tools.r8.deterministicdebugging=1
-Pkotlin.compiler.execution.strategy=in-process
-Pkotlin.incremental=false
--no-build-cache