Android Studio emulator not working

Development
1

Hello,
I am running nixos-unstable NixOS 20.03pre194293.2436c275.
When trying to launch an emulator from Android Studio, I get the following error:

Emulator: /home/julius/Android/Sdk/emulator/qemu/linux-x86_64/qemu-system-x86_64:
error while loading shared libraries: libnss3.so: cannot open shared object file: No such file or directory
Emulator: Process finished with exit code 127

I have tried running Pixel 3 API 29 and Nexus 5X API 28, both produce the same error.

I have also tried running an emulator with emulateApp (app attribute is set to the apk file built by Android Studio):

with import <nixpkgs> {
  config = {
    android_sdk.accept_license = true;
  };
};

androidenv.emulateApp {
  name = "PolarView";
  platformVersion = "28";
  abiVersion = "x86_64";
  systemImageType = "default";
  app = app/build/outputs/apk/debug/app-debug.apk;
  package = "com.github.jul1u5.polarview";
  activity = ".MainActivity";
}

After getting a dated looking emulator by executing result/bin/run-test-emulator I get this error:

adb: failed to install /nix/store/323pqyjip2k4ipz3bxyz9884wz1vbw2l-app-debug.apk:
Failure [INSTALL_FAILED_TEST_ONLY: installPackageLI]

The emulator also has an enormous unnecessary keyboard on the right side, and I can’t find how to get rid of it.

I have also tried using buildApp for the app attribute however, the derivation fails to build because:

Buildfile: build.xml does not exist!
Build failed

I have no idea what build.xml is, and where it should come from (Android Studio doesn’t create this file).

I would appreciate if someone could explain any of my questions:

  1. Why I can’t run emulators from Android Studio and how can I fix this?
  2. How can I get emulateApp and buildApp functions to work?
  3. How can I update or modify (disable the onscreen keyboard) the emulator that is produced by emulateApp?
2

Unfortunately newer versions of the emulator required additional dependencies that we hadn’t added yet.

This should now be fixed on master but it might take a few days for it to land in the channels:

3

Good to hear, that it has been fixed! How can I track when the fix will be available on the unstable channel?

Also, are there any good up to date references/examples of how to use emulateApp and buildApp? I have looked at reflex-platform repository but it’s quite complex.

4

I just checked and it’s already in the nixos-unstable channel.

There seems to be an official documentation:

If those examples don’t work it might be a good idea to open an issue.

There are also a few older blog posts, but I’m not sure if they’re still that helpful:

But as I never used emulateApp myself, I unfortunately cannot help you with this :o