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Fork of stable Firefox for Android ("Fenix") with add-on override from nightly

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Firefox for Android (modified)

About this fork

UPDATE: With release 107.1.0, AMO collection override is finally available in beta. See the respective issue here.

Since it's still not available in stable, I'll keep maintaining this fork for the time being. There is a feature request for stable too.

===

This is a fork of Mozilla Fenix, modified to allow installing any add-on you like using the AMO collection override.

The override feature was introduced in 2020 and allows users to install any add-on as long as its part of an add-on collection on addons.mozilla.org (AMO) - by default you can only install a very small collection of curated add-ons.

Even though you need to activate a hidden debug menu to even see the corresponding setting, Mozilla has decided to make it available only in unstable Nightly builds and ignored many user requests to at least make it available in Beta, since.

The reasoning behind this decision is that they don't want to drive users away from Firefox by them having a bad experience when installing add-ons that haven't been tested and approved on Android.

In other words, if you want to use any add-on not on the curated list, Mozilla forces you to:

  1. Create an account on addons.mozilla.org and curate your own collection of add-ons
  2. Activate a hidden debug menu in Firefox to give your add-on collection id
  3. Use only unstable Nightly builds indefinitely, because other versions don't even have that debug menu

To many people (including myself) restriction 3) doesn't make sense, because regardless of Nightly or Stable the feature would still be hidden behind a debug menu that you need to know even exists and activate manually. It just hurts experienced users while not helping anyone.

This fork:

  1. takes stable upstream Fenix releases and removes restriction 3) mentioned above
  2. changes the app name (to "Firefox mod" instead of "Firefox") and app ID

It's currently not possible to install both Fenix and this fork alongside each other.

At least I didn't manage to do it. Iceraven can be installed alongside Fenix so if that's a must for you, try Iceraven.

There are other forks of Fenix that also don't have the restriction. Most notably Iceraven, which has other features and contains a custom add-on installation menu so you won't even need to create an AMO account anymore.

Due to these other features and the resulting bigger code delta, Iceraven usually takes longer to catch up with the latest upstream release, though, which is why I created this fork as a very easily maintainable fork without any differences to upstream apart from allowing add-on collections in stable releases.

Iceraven's automation scripts were really helpful in creating this fork. So thanks a lot to you, devs! ❤️

If Mozilla finally stops treating Fenix users like idiots and removes the restriction upstream, I'll stop updating the fork - with prior announcement of course.

You can find the patches that are being applied to the upstream code and the release pipeline here in a separate repo.

Branding

The app currently uses the default Firefox branding. Only the app name and ID are different, inside the app it still says "Firefox" everywhere.

@Mozilla: If this doesn't sit well with you, please create an issue in this repo and I'll come up with my own branding.

Installation

Move to the Releases page and choose the latest release. In the release artifacts, you'll find APKs for different architectures. Download the one matching your device's arch and install.

Google Play might ask you whether you really want to install this unknown app, just tap yes. This should eventually not happen anymore once more people start using it.

You can check out the Git history to make sure there's no malware being added to upstream code here. 🙂

The app is currently not available on the Google Play or F-Droid store but might be in the future.

Original upstream README

Task Status codecov

Fenix (internal codename) is the all-new Firefox for Android browser, based on GeckoView and Mozilla Android Components.

Get it on Google Play

Getting Involved

Please read the Community Participation Guidelines and the Bugzilla Etiquette guidelines before filing an issue. This is our professional working environment as much as it is our bug tracker, and we want to keep our workspace clean and healthy.

Beginners! - Watch out for Issues with the "Good First Issue" label. These are easy bugs that have been left for first timers to have a go, get involved and make a positive contribution to the project!

I want to open a Pull Request!

We encourage you to participate in this open source project. We love Pull Requests, Bug Reports, ideas, (security) code reviews or any other kind of positive contribution.

Since we are a small team, however, we do not have the bandwidth to review unsolicited PRs. Please follow our Pull Request guidelines, or we may close the PR.

To make it easier to review, we have these PR requirements:

  • Every PR must have exactly one issue associated with it.
  • Write a clear explanation of what the code is doing when opening the pull request, and optionally add comments to the PR.
  • Make sure there are tests - or ask for help on how the code should be tested in the Issue!
  • Keep PRs small and to the point. For extra code-health changes, either file a separate issue, or make it a separate PR that can be easily reviewed.
  • Use micro-commits. This makes it easier and faster to review.
  • Add a screenshot for UX changes (this is part of the PR checklist)

As a small team, we have to prioritize our work, and reviewing PRs takes time. We receive lots of PRs every day, so if you can keep your PRs small, it helps our small team review and merge code faster, minimizing stale code.

Keep in mind that the team is very overloaded, so PRs sometimes wait for a very long time. However this is not for lack of interest, but because we find ourselves in a constant need to prioritize certain issues/PRs over others. If you think your issue/PR is very important, try to popularize it by getting other users to comment and share their point of view.

I want to file an issue!

Great! We encourage you to participate in this open source project. We love Pull Requests, Bug Reports, ideas, (security) code reviews or any other kind of positive contribution.

To make it easier to triage, we have these issue requirements:

  • Please do your best to search for duplicate issues before filing a new issue so we can keep our issue board clean.
  • Every issue should have exactly one bug/feature request described in it. Please do not file meta feedback list tickets as it is difficult to parse them and address their individual points.
  • Feature Requests are better when they’re open-ended instead of demanding a specific solution -ie “I want an easier way to do X” instead of “add Y”
  • Issues are not the place to go off topic or debate. If you have questions, please join the #fenix:mozilla.org channel.
  • Please always remember our Community Participation Guidelines
  • Please do not tag specific team members to try to get your issue looked at faster. We have a triage process that will tag and label issues correctly in due time. If you think an issue is very severe, you can ask about it in Matrix.

Please keep in mind that even though a feature you have in mind may seem like a small ask, as a small team, we have to prioritize our planned work and every new feature adds complexity and maintenance and may take up design, research, marketing, product, and engineering time. We appreciate everyone’s passion but we will not be able to incorporate every feature request or even fix every bug. That being said, just because we haven't replied, doesn't mean we don't care about the issue, please be patient with our response times as we're very busy.

Build Instructions

Pre-requisites:

  • Android SDK
  • To run command line tools, you'll need to configure Java: see our how-to guide.
  1. Clone or Download the repository:
git clone https://github.com/mozilla-mobile/fenix
  1. Import the project into Android Studio or build on the command line:
./gradlew clean app:assembleDebug

If this errors out, make sure that you have an ANDROID_SDK_ROOT environment variable pointing to the right path.

  1. Make sure to select the correct build variant in Android Studio. See the next section.

  2. Make sure to select "Default APK" under Installation Options inside Run/Debug configuration: see this bug.

Build Variants

For general development, we recommend the debug build variant. Here's an explanation of each variant:

  • debug: the default for developers, similar to most other Android apps. It is debuggable, uses a Nightly GeckoView with debug symbols, adds tools like LeakCanary for troublingshooting, and does not strip unused code.
  • nightly: what we ship to the Firefox Nightly channel, using GeckoView Nightly.
  • beta: what we ship to the Firefox Beta channel, using GeckoView Beta. It is more stable than nightly.
  • release: what we ship as Firefox for Android, using GeckoView Release. It is the most stable.

nightly, beta, and release are unsigned and debuggable=false by default. If you want these variants to be:

Performance Build Variants

For accurate performance measurements, read this section!

To analyze performance during local development build a production variant locally (this could either be the Nightly, beta or release). Otherwise, you could also grab a pre-existing APK if you don't need to test some local changes. Then, use the Firefox profiler to profile what you need!

For more information on how to use the profiler or how to use the build, refer to this how to measure performance with the build

If you want to run performance tests/benchmarks in automation or locally use a production build since it is much closer in behavior compared to what users see in the wild.

Before you can install any release builds, You will need to sign production build variants: see Automatically signing release builds for details.

Known disabled-by-default features

Some features are disabled by default when Fenix is built locally. This can be problematic at times for checking performance since you might want to know how your code behaves with those features. The known features that are disabled by default are:

  • Sentry
  • Adjust
  • Mozilla Location Services (also known as MLS)
  • Firebase Push Services
  • Telemetry (only disabled by default in debug builds)
  • Nimbus

Pre-push hooks

To reduce review turn-around time, we'd like all pushes to run tests locally. We'd recommend you use our provided pre-push hook in config/pre-push-recommended.sh. Using this hook will guarantee your hook gets updated as the repository changes. This hook tries to run as much as possible without taking too much time.

Before you can run the hook, you'll need to configure Java properly because it relies on command line tools: see our how-to guide.

To add it on Mac/Linux, run this command from the project root:

ln -s ../../config/pre-push-recommended.sh .git/hooks/pre-push

or for Windows run this command using the Command Prompt with administrative privileges:

mklink .git\hooks\pre-push ..\..\config\pre-push-recommended.sh

or using PowerShell:

New-Item -ItemType SymbolicLink -Path .git\hooks\pre-push -Value (Resolve-Path config\pre-push-recommended.sh)

To push without running the pre-push hook (e.g. doc updates):

git push <remote> --no-verify

Note: If while pushing you encounter this error "Could not initialize class org.codehaus.groovy.runtime.InvokerHelper" and are currently on Java14 then downgrading your Java version to Java13 or lower can resolve the issue

Steps to downgrade Java Version on Mac with Brew:

  1. Install Homebrew (https://brew.sh/)
  2. run brew update
  3. To uninstall your current java version, run sudo rm -fr /Library/Java/JavaVirtualMachines/<jdk-version>
  4. run brew tap homebrew/cask-versions
  5. run brew search java
  6. If you see java11, then run brew install java11
  7. Verify java-version by running java -version

local.properties helpers

You can speed up local development by setting a few helper flags available in local.properties. Some flags will make it easy to work across multiple layers of the dependency stack - specifically, with android-components, geckoview or application-services.

Automatically sign release builds

To sign your release builds with your debug key automatically, add the following to <proj-root>/local.properties:

autosignReleaseWithDebugKey

With this line, release build variants will automatically be signed with your debug key (like debug builds), allowing them to be built and installed directly through Android Studio or the command line.

This is helpful when you're building release variants frequently, for example to test feature flags and or do performance analyses.

Building debuggable release variants

Nightly, Beta and Release variants are getting published to Google Play and therefore are not debuggable. To locally create debuggable builds of those variants, add the following to <proj-root>/local.properties:

debuggable

Setting raptor manifest flag

To set the raptor manifest flag in Nightly, Beta and Release variants, add the following to <proj-root>/local.properties:

raptorEnabled

Auto-publication workflow for android-components and application-services

If you're making changes to these projects and want to test them in Fenix, auto-publication workflow is the fastest, most reliable way to do that.

In local.properties, specify a relative path to your local android-components and/or application-services checkouts. E.g.:

  • autoPublish.android-components.dir=../android-components
  • autoPublish.application-services.dir=../application-services

Once these flags are set, your Fenix builds will include any local modifications present in these projects.

See a demo of auto-publication workflow in action.

In order to build successfully, you need to check out a commit in the dependency repository that has no breaking changes. The two best ways to do this are:

  • Run the <android-components>/tools/list_compatible_dependency_versions.py script to output a compatible commit
  • Check out the latest commit from main in this repository and the dependency repository. However, this may fail if there were breaking changes added recently to the dependency.

If you're trying to build fenix with a local ac AND a local GV, you'll have to use another method: see this doc.

Using Nimbus servers during local development

If you're working with the Nimbus experiments platform, by default for local development Fenix configures Nimbus to not use a server.

If you wish to use a Nimbus server during local development, you can add a https:// or file:// endpoint to the local.properties file.

  • nimbus.remote-settings.url

Testing experimental branches should be possible without a server.

GeckoView

Specify a relative path to your local mozilla-central checkout via dependencySubstitutions.geckoviewTopsrcdir, and optional a path to m-c object directory via dependencySubstitutions.geckoviewTopobjdir.

If these are configured, local builds of GeckoView will be used instead of what's configured in Dependencies.kt. For more details, see https://firefox-source-docs.mozilla.org/mobile/android/geckoview/contributor/geckoview-quick-start.html#include-geckoview-as-a-dependency

See notes on building successfully in the android-components auto-publication section.

License

This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/

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