{
  description = "A Nix-flake-based development environment for OpenStApps";
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
  outputs = { self, nixpkgs }:
    let
      buildToolsVersion = "30.0.3";
      overlays = [
        (final: prev: rec {
          nodejs = prev.nodejs-18_x;
          pnpm = prev.nodePackages.pnpm;
          chrome = prev.google-chrome;
          firefox = prev.firefox;
          webkit = prev.epiphany; # Safari-ish browser
          android = prev.androidenv.composeAndroidPackages {
            buildToolsVersions = [ "${buildToolsVersion}" ];
            platformVersions = [ "33" ];
          };
          cypress = prev.cypress.overrideAttrs(cyPrev: rec {
            version = "13.2.0";
            src = prev.fetchzip {
              url = "https://cdn.cypress.io/desktop/${version}/linux-x64/cypress.zip";
              hash = "sha256-9o0nprGcJhudS1LNm+T7Vf0Dwd1RBauYKI+w1FBQ3ZM=";
            };
          });
        })
      ];
      # TODO: aarch64-linux, x68_64-darwin, aarch64-darwin
      supportedSystems = [ "x86_64-linux" ];
      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
        pkgs = import nixpkgs {
          inherit overlays system;
          config = {
            allowUnfree = true;
            android_sdk.accept_license = true;
          };
        };
      });
    in
    {
      devShells = forEachSupportedSystem ({ pkgs }:
      let
        python = (pkgs.python311.withPackages(ps: with ps; [ brotli fonttools ] ++ (with fonttools.optional-dependencies; [ ufo lxml unicode woff ])));
      in
      {
        default = (pkgs.buildFHSUserEnv {
          name = "StApps Dev";
          targetPkgs = pkgs: with pkgs; [
            nodejs
            pnpm
            python
            docker
            # tools
            curl
            jq
            # browsers
            firefox
            chrome
            webkit
            cypress
            # android
            jdk17
            android.androidsdk
            musl
          ];
          runScript = "bash";
          profile = ''
            export CYPRESS_INSTALL_BINARY=0
            export CYPRESS_RUN_BINARY=${pkgs.cypress}/bin/Cypress
            export ANDROID_SDK_ROOT=${pkgs.android.androidsdk}/libexec/android-sdk
            export ANDROID_JAVA_HOME=${pkgs.jdk.home}
            export DOCKER_HOST=unix:///run/user/1000/docker.sock
            { dockerd-rootless & } 2>/dev/null
          '';
        }).env;
      });
    };
}