matrix-android/flake.nix
ltadeu6 3747172488 Fix E2EE encryption surviving app restarts
Six interconnected fixes to make Olm/Megolm state persist correctly
across restarts:

- Fix OlmAccount/OlmSession unpickle argument order (data, key) — was
  reversed, causing INVALID_BASE64 on every restore
- Fix pickle byte encoding: pickle() returns ByteArray, not StringBuffer;
  encode/decode with ISO_8859_1
- Track publishedOtkCount in SharedPreferences to avoid evicting existing
  OTKs on restore (only generate MAX - published new keys)
- Delay startSync() until after uploadKeys() on fresh login to avoid
  concurrent OlmAccount access (race condition causing BAD_MESSAGE_KEY_ID)
- Persist encryptedRooms to SharedPreferences so rooms stay encrypted
  across restarts
- Check m.room.encryption in both state and timeline events (server
  returns it in timeline for rooms where encryption was enabled early)

Also adds SAS device verification UI, DM naming improvements, and
updates state.md with full architecture and debugging notes.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-17 15:21:09 -03:00

81 lines
2.8 KiB
Nix

{
description = "Nix dev shell for building matrix-android from the CLI";
inputs = {
flake-utils.url = "github:numtide/flake-utils";
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
};
outputs = { self, flake-utils, nixpkgs }:
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = import nixpkgs {
inherit system;
config.allowUnfree = true;
config.android_sdk.accept_license = true;
config.permittedInsecurePackages = [ "olm-3.2.16" ];
};
androidComposition = pkgs.androidenv.composeAndroidPackages {
platformVersions = [ "31" "35" ];
buildToolsVersions = [ "30.0.2" "34.0.0" "35.0.0" ];
includeEmulator = true;
includeNDK = true;
includeSources = false;
includeSystemImages = true;
systemImageTypes = [ "google_apis" ];
abiVersions = [ "x86_64" ];
};
androidSdk = androidComposition.androidsdk;
androidSdkRoot = "${androidSdk}/libexec/android-sdk";
in
{
devShells.default = pkgs.mkShell {
packages = [
pkgs.gradle
pkgs.jdk17
androidSdk
pkgs.matrix-commander
];
ANDROID_HOME = androidSdkRoot;
ANDROID_SDK_ROOT = androidSdkRoot;
JAVA_HOME = pkgs.jdk17.home;
shellHook = ''
export ANDROID_USER_HOME="$PWD/.android"
export GRADLE_USER_HOME="$PWD/.gradle"
export PATH="$ANDROID_SDK_ROOT/platform-tools:$PATH"
export GRADLE_OPTS="-Dorg.gradle.project.android.aapt2FromMavenOverride=$ANDROID_SDK_ROOT/build-tools/35.0.0/aapt2"
cat > local.properties <<EOF
# Generated by nix develop.
sdk.dir=$ANDROID_SDK_ROOT
EOF
# Launches the Pixel_3a_API_35 AVD. System images come from the nix SDK.
# The emulator window is shown by default.
start-avd() {
local avd_name="Pixel_3a_API_35"
local avd_dir="$HOME/.android/avd/$avd_name.avd"
if [ ! -d "$avd_dir" ]; then
echo "Creating AVD $avd_name..."
echo "no" | avdmanager create avd \
-n "$avd_name" \
-k "system-images;android-35;google_apis;x86_64" \
-d "pixel_3a" --force
fi
emulator -avd "$avd_name" -no-snapshot-load "$@" &
echo "Emulator starting (PID $!) run 'adb wait-for-device' to wait for boot"
}
echo "matrix-android dev shell"
echo " JAVA_HOME=$JAVA_HOME"
echo " ANDROID_SDK_ROOT=$ANDROID_SDK_ROOT"
echo " Build with: gradle assembleDebug"
echo " Emulator: start-avd"
'';
};
});
}