Updating TrackerControl on F-Droid

[kasnder]

TrackerControl's WireGuard engine is compiled from Rust source. New F-Droid
build entries must prepare the pinned Rust toolchain and Cargo dependencies
before F-Droid starts its offline Gradle build.

The examples below use release 2026071201 / 2026.07.12. Substitute the
actual version code and version name for later releases.

1. Tag the release

Only tag a commit that includes the current rust-toolchain.toml,
wgbridge-rs/Cargo.lock, and scripts/setup_rust_android.sh files.

git tag 2026071201
git push origin 2026071201

TrackerControl's F-Droid metadata uses numeric tags as release identifiers.

2. Prepare an fdroiddata merge request

Fork fdroid/fdroiddata, then clone the
fork and create a branch:

git clone https://gitlab.com/YOUR_USERNAME/fdroiddata.git
cd fdroiddata
git remote add upstream https://gitlab.com/fdroid/fdroiddata.git
git switch -c trackercontrol-2026071201

Edit:

metadata/net.kollnig.missioncontrol.fdroid.yml

Append this entry under Builds::

  - versionName: 2026.07.12-fdroid
    versionCode: 2026071201
    commit: '2026071201'
    subdir: app
    sudo:
      - apt-get update
      - apt-get install -y rustup gcc libc-dev
    gradle:
      - fdroid
    prebuild:
      - ../scripts/setup_rust_android.sh
    ndk: r27c

Update the current-version fields at the bottom of the file:

CurrentVersion: 2026.07.12-fdroid
CurrentVersionCode: 2026071201

Keep the automatic-update configuration unchanged:

AutoUpdateMode: Version
UpdateCheckMode: Tags ^[0-9]+$

3. Validate the metadata

With fdroidserver installed and available on PATH, run from the
fdroiddata checkout:

fdroid readmeta
fdroid lint net.kollnig.missioncontrol.fdroid

For an end-to-end local application check, first provision the pinned Rust
dependencies while networking is available, then build the release offline:

./scripts/setup_rust_android.sh
./gradlew :app:assembleFdroidRelease --offline

The APK should contain libwgbridge.so for armeabi-v7a, arm64-v8a, x86,
and x86_64.

4. Submit the metadata change

From the fdroiddata checkout:

git add metadata/net.kollnig.missioncontrol.fdroid.yml
git commit -m "Update TrackerControl to 2026071201"
git push origin trackercontrol-2026071201

Open a merge request from that branch into fdroid/fdroiddata:master.

Suggested merge-request description:

TrackerControl now builds its WireGuard engine from Rust source.

The prebuild step installs the repository-pinned Rust toolchain, Android
targets, and cargo-ndk, and fetches Cargo.lock dependencies. The Gradle build
itself runs Cargo with --locked --offline.

Locally verified with:
./gradlew :app:assembleFdroidRelease --offline

If the update bot opens a merge request first

The checkupdates bot normally copies the previous build recipe, which does not
contain the Rust preparation steps. Its source branch belongs to F-Droid's bot
fork and may not be editable by the TrackerControl maintainers.

Create the complete merge request from the TrackerControl maintainer's own
fdroiddata fork as described above. Comment on the bot merge request with a
link to the replacement and ask F-Droid's maintainers to close the bot merge
request in favor of it.

F-Droid's general contribution guide is available at
https://fdroid.gitlab.io/jekyll-fdroid/docs/Submitting_to_F-Droid_Quick_Start_Guide/.