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210
modules/android/default.nix
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210
modules/android/default.nix
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{ config, pkgs, lib, ... }:
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let
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cfg = config.modules.android;
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in
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{
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options.modules.android = {
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enable = lib.mkEnableOption "Android development environment with emulator support";
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enableEmulator = lib.mkOption {
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type = lib.types.bool;
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default = true;
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description = "Enable Android emulator for testing Flutter and Android apps";
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};
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apiLevel = lib.mkOption {
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type = lib.types.int;
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default = 34;
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description = "Default Android API level for the emulator";
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};
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enableFlutterSupport = lib.mkOption {
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type = lib.types.bool;
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default = true;
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description = "Enable Flutter SDK and related tools";
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};
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};
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config = lib.mkIf cfg.enable {
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home.packages = with pkgs; [
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# Android Studio Full with FHS environment (recommended for NixOS)
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# This includes SDK, emulator, and all necessary tools
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android-studio-full
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# Core Android command-line tools
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android-tools
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# Build and compilation tools
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gradle
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maven
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ninja
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cmake
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gnumake
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pkg-config
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# Java/Kotlin development
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jdk
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jdk21
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kotlin
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# Flutter SDK for app development
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(if cfg.enableFlutterSupport then flutter else null)
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# Flutter Version Manager
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(if cfg.enableFlutterSupport then fvm else null)
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# Additional Android tools
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scrcpy # Screen sharing for Android devices
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apksigner # Sign APKs
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];
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# Environment variables for Android development
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home.sessionVariables = lib.mkIf cfg.enable {
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ANDROID_HOME = "$HOME/.android";
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ANDROID_SDK_ROOT = "$HOME/Android/Sdk";
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ANDROID_USER_HOME = "$HOME/.android";
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JAVA_HOME = "${pkgs.jdk}/lib/openjdk";
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# For Flutter development
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ANDROID_JAVA_HOME = "${pkgs.jdk}";
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};
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# Create a script to launch the Android emulator
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# Note: This works with the NixOS androidenv setup
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home.file.".local/share/bin/android-emulator" = lib.mkIf cfg.enableEmulator {
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executable = true;
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text = ''
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#!/usr/bin/env bash
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# Android Emulator launcher script for NixOS
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# Uses android-studio-full's built-in tools
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set -e
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EMULATOR_NAME="''${1:-flutter-dev}"
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API_LEVEL="''${2:-${toString cfg.apiLevel}}"
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echo "Starting Android Emulator: $EMULATOR_NAME (API $API_LEVEL)"
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# Check if AVD exists, if not create it
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if ! grep -q "^[^#]*name=$EMULATOR_NAME" ~/.android/avd/devices.txt 2>/dev/null; then
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echo "Creating AVD: $EMULATOR_NAME..."
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# Try using avdmanager from Android Studio
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if command -v avdmanager &> /dev/null; then
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echo "no" | avdmanager create avd \
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--name "$EMULATOR_NAME" \
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--package "system-images;android-$API_LEVEL;google_apis;x86_64" \
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--device "pixel_6" \
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--force 2>&1 || {
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echo "Error: Could not create AVD"
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echo "Try running: android-studio to set up SDK from the IDE"
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exit 1
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}
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else
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echo "Error: avdmanager not found"
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echo "Please open Android Studio and complete the SDK setup:"
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echo " android-studio"
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echo ""
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echo "Then use SDK Manager to download system images for API $API_LEVEL"
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exit 1
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fi
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fi
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# Launch emulator with optimizations for NixOS
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emulator -avd "$EMULATOR_NAME" \
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-memory 2048 \
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-partition-size 4096 \
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-dns-server 8.8.8.8 \
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-no-snapshot-load \
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-no-snapshot-save \
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-gpu auto \
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-no-boot-anim \
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&
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EMULATOR_PID=$!
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echo "Emulator starting in background (PID: $EMULATOR_PID)"
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echo "Waiting for boot..."
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# Wait for emulator to boot
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for i in {1..90}; do
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if adb shell getprop sys.boot_completed 2>/dev/null | grep -q "1"; then
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echo "✓ Emulator fully booted!"
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exit 0
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fi
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echo -n "."
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sleep 2
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done
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echo ""
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echo "⚠ Timeout waiting for emulator to boot"
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exit 1
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'';
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};
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# Create a setup script to initialize Android environment on first use
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home.file.".local/share/bin/android-setup" = lib.mkIf cfg.enable {
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executable = true;
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text = ''
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#!/usr/bin/env bash
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# One-time setup script for Android development on NixOS
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echo "Setting up Android development environment..."
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echo ""
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# Check if sdkmanager is available
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if ! command -v sdkmanager &> /dev/null; then
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echo "Warning: sdkmanager not found in PATH"
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echo "This is normal on NixOS. You'll need to use Android Studio to manage SDKs."
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echo ""
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echo "Opening Android Studio for SDK setup..."
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android-studio &
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echo ""
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echo "In Android Studio:"
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echo " 1. Go to Tools → SDK Manager"
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echo " 2. Select API levels you want to download"
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echo " 3. Click 'Apply' and 'OK'"
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echo " 4. Close Android Studio when done"
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exit 0
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fi
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# Accept Android licenses
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echo "Accepting Android licenses..."
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yes | sdkmanager --licenses 2>&1 | tail -10
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echo ""
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echo "✓ Android environment setup complete!"
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echo ""
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echo "Next steps:"
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echo " 1. Run: android-emulator (to create and start emulator)"
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echo " 2. For Flutter: flutter doctor"
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echo " 3. For Android Studio: android-studio"
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echo ""
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'';
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};
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# Optional: Add udev rules for Android devices
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# This allows debugging on physical devices without root
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home.file.".config/udev/rules.d/51-android.rules" = lib.mkIf cfg.enable {
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text = ''
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# Android debug bridge - allows USB debugging without sudo
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SUBSYSTEM=="usb", ATTR{idVendor}=="0bb4", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="0e79", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="0502", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="0b05", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="413c", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="0489", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="091e", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="0d4d", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="05c6", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="04e8", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="04da", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="04b7", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="04b8", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="04b9", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="0bed", MODE="0666", GROUP="adbusers"
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SUBSYSTEM=="usb", ATTR{idVendor}=="1d4d", MODE="0666", GROUP="adbusers"
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'';
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};
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};
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}
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