{
  description = "Firka — development environment";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    android-nixpkgs = {
      url = "github:tadfisher/android-nixpkgs";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, flake-utils, android-nixpkgs }:
    flake-utils.lib.eachSystem [ "aarch64-darwin" "x86_64-darwin" "x86_64-linux" ] (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        androidSdk = android-nixpkgs.sdk.${system} (sdkPkgs: with sdkPkgs; [
          cmdline-tools-latest
          build-tools-34-0-0
          build-tools-35-0-0
          build-tools-36-1-0
          platform-tools
          platforms-android-34
          platforms-android-35
          platforms-android-36
          ndk-28-2-13676358
          cmake-3-22-1
        ]);
      in
      {
        devShells.default = pkgs.mkShell {
          buildInputs = with pkgs; [
            flutter
            git
            jq
            jdk17
            androidSdk
          ];

          shellHook = ''
            export GRADLE_OPTS="-Dorg.gradle.project.android.aapt2FromMavenOverride=$ANDROID_HOME/build-tools/36.1.0/aapt2"
            flutter --version | head -1
            dart --version
          '';
        };
      });
}