Files
android-webview-kiosk/flake.nix
T
2026-06-12 21:02:34 +02:00

122 lines
3.9 KiB
Nix

{
# android-webview-kiosk — Android TV fullscreen WebView kiosk showing a
# hardcoded Grafana dashboard, remote-launched via Sony Bravia IP control.
#
# Deviation from lab Go template: APK is built impurely (Gradle fetches Maven
# deps from the network). No `nix build` output; use nix run instead:
# nix run — build all APKs then deploy to TV
# nix run .#build — build only
# nix run .#deploy — deploy already-built APKs to TV
description = "Android TV fullscreen WebView kiosk for the Grafana house dashboard";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/release-26.05";
flake-utils.url = "github:numtide/flake-utils";
};
outputs =
{
self,
nixpkgs,
flake-utils,
}:
flake-utils.lib.eachSystem [ "x86_64-linux" ] (
system:
let
pkgs = import nixpkgs {
inherit system;
config = {
allowUnfree = true; # Android SDK
android_sdk.accept_license = true;
};
};
buildToolsVersion = "36.0.0";
androidComposition = pkgs.androidenv.composeAndroidPackages {
platformVersions = [ "35" ];
buildToolsVersions = [ buildToolsVersion ];
includeEmulator = false;
includeSystemImages = false;
includeNDK = false;
};
androidSdk = androidComposition.androidsdk;
sdkRoot = "${androidSdk}/libexec/android-sdk";
fonts = with pkgs; [ noto-fonts dejavu_fonts freefont_ttf ];
gradleEnv = {
ANDROID_HOME = sdkRoot;
ANDROID_SDK_ROOT = sdkRoot;
JAVA_HOME = "${pkgs.jdk21}";
GRADLE_OPTS = "-Dorg.gradle.project.android.aapt2FromMavenOverride=${sdkRoot}/build-tools/${buildToolsVersion}/aapt2";
FONTCONFIG_FILE = pkgs.makeFontsConf { fontDirectories = fonts; };
};
deployScript = ''
trap 'adb disconnect "$TV_IP:5555"' EXIT
adb connect "$TV_IP:5555"
for apk in app/build/outputs/apk/*/release/*.apk; do
adb install -r "$apk"
done
'';
exportGradleEnv = ''
export ANDROID_HOME="${sdkRoot}"
export ANDROID_SDK_ROOT="${sdkRoot}"
export JAVA_HOME="${pkgs.jdk21}"
export GRADLE_OPTS="${gradleEnv.GRADLE_OPTS}"
export FONTCONFIG_FILE="${gradleEnv.FONTCONFIG_FILE}"
'';
tvDeploy = pkgs.writeShellApplication {
name = "tv-deploy";
runtimeInputs = [ pkgs.android-tools ];
text = deployScript;
};
buildApp = pkgs.writeShellApplication {
name = "build";
runtimeInputs = [ androidSdk pkgs.jdk21 pkgs.gradle_9 ];
text = ''
${exportGradleEnv}
gradle --no-daemon :app:test
gradle --no-daemon :app:assembleRelease
'';
};
buildAndDeploy = pkgs.writeShellApplication {
name = "build-and-deploy";
runtimeInputs = [ androidSdk pkgs.jdk21 pkgs.gradle_9 pkgs.android-tools ];
text = ''
${exportGradleEnv}
gradle --no-daemon :app:test
gradle --no-daemon :app:assembleRelease
${deployScript}
'';
};
in
{
apps = {
default = { type = "app"; program = "${buildAndDeploy}/bin/build-and-deploy"; };
build = { type = "app"; program = "${buildApp}/bin/build"; };
deploy = { type = "app"; program = "${tvDeploy}/bin/tv-deploy"; };
};
devShells.default = pkgs.mkShell {
packages = [
androidSdk
pkgs.jdk21
pkgs.gradle_9
pkgs.imagemagick # banner/icon generation
pkgs.android-tools # adb for sideloading
tvDeploy
] ++ fonts;
inherit (gradleEnv) ANDROID_HOME ANDROID_SDK_ROOT JAVA_HOME GRADLE_OPTS FONTCONFIG_FILE;
};
}
);
}