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Support F-Droid Android builds (#1768)

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* fix(android): support source-based APK builds

Co-authored-by: Anton Lazarev <22821309+antonok-edm@users.noreply.github.com>

* fix(android): address fdroid review feedback

Co-authored-by: Anton Lazarev <22821309+antonok-edm@users.noreply.github.com>

* fix(android): complete the F-Droid build profile

* fix(app): isolate the F-Droid runtime flag

---------

Co-authored-by: Anton Lazarev <22821309+antonok-edm@users.noreply.github.com>
This commit is contained in:
Mohamed Boudra
2026-07-13 11:18:19 +02:00
committed by GitHub
parent 1f7efbd185
commit b6d49da4df
13 changed files with 328 additions and 67 deletions
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27
docs/android.md
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@@ -13,6 +13,18 @@ EAS profiles: `development`, `production`, and `production-apk` in `packages/app
`development` uses Android `debug`.
## Version codes
`packages/app/app.config.js` derives Android `versionCode` from the package version with:
```text
major * 1_000_000 + minor * 1_000 + patch
```
Prerelease metadata is ignored, so `0.1.102-beta.1` and `0.1.102` both produce `1102`. The same value is used as the iOS `buildNumber` because `packages/app/eas.json` uses EAS's local app version source. Do not re-enable EAS remote version counters or Android `autoIncrement`; F-Droid and other source-based builders need the native build number to be visible in the repo.
The formula reserves three digits each for minor and patch. If either reaches `1000`, change the formula before cutting that release.
## Local build + install
From repo root:
@@ -38,6 +50,21 @@ npx cross-env APP_VARIANT=production expo run:android --variant=release
rm -rf android
```
## F-Droid / source-only Android builds
F-Droid builds should set `PASEO_FDROID_BUILD=1` when running Expo prebuild:
```bash
cd packages/app
PASEO_FDROID_BUILD=1 APP_VARIANT=production npx expo prebuild --platform android --clean --non-interactive
cd android
PASEO_FDROID_BUILD=1 ./gradlew assembleRelease --no-daemon --max-workers=1 -Dorg.gradle.parallel=false
```
The flag must be present for both prebuild and Gradle because Gradle starts Metro for the release bundle. Keep the source build serial and daemon-free as shown above: compiling every Expo module can exhaust memory when Gradle workers run in parallel. The profile enables source-built Expo modules, excludes the proprietary camera, Firebase notification, and Expo development-client native modules, disables EAS updates and Gradle dependency metadata, and substitutes JavaScript stubs for camera and notifications. The resulting app supports direct and pasted-link pairing but not QR scanning or push notifications.
Keep the excluded npm packages installed. Normal builds use them, while the F-Droid profile removes only their Android native modules and config plugins. Paseo always applies `expo-gradle-jvmargs` with `-Xmx4096m` and `-XX:MaxMetaspaceSize=1024m` so local Expo prebuilds have enough Gradle heap whether they use precompiled AARs or source-built Expo modules.
### React version lockstep
Keep `react` and `react-dom` pinned to the React version embedded by the current `react-native` release. React Native `0.81.x` embeds `react-native-renderer` `19.1.0`, so `packages/app` must use React `19.1.0`. Bumping React to a newer patch can build successfully but crash at JS startup on Android with `Incompatible React versions`, leaving the app on the native splash screen.