{ stdenv, pkgs, target-os ? "" }:

with pkgs;
with stdenv; 

let
  android-ndk = callPackage ./android-ndk { };
  targetAndroid = {
    "android" = true;
    "" = true;
  }.${target-os} or false;

in
  {
    buildInputs = lib.optional targetAndroid [
      android-ndk
      openjdk
    ];
    shellHook = lib.optionalString targetAndroid ''
      export JAVA_HOME="${openjdk}"
      export ANDROID_HOME=~/.status/Android/Sdk
      export ANDROID_SDK_ROOT="$ANDROID_HOME"
      export ANDROID_NDK_ROOT="${android-ndk}"
      export ANDROID_NDK_HOME="${android-ndk}"
      export ANDROID_NDK="${android-ndk}"
      export PATH="$ANDROID_HOME/bin:$ANDROID_HOME/tools:$ANDROID_HOME/tools/bin:$ANDROID_HOME/platform-tools:$ANDROID_HOME/build-tools:$PATH"
    '';
  }