baby step

apks/li/lichess/package.nix

@@ -0,0 +1,59 @@
+{
+  lib,
+  stdenv,
+  pkgs
+}:
+
+stdenv.mkDerivation rec {
+  name = "lichess";
+  version = "0.14.14";
+  src = pkgs.fetchFromGitHub {
+    owner = "lichess-org";
+    repo = "mobile";
+    tag = "v${version}";
+    hash = "sha256-NqS3vyz9x2yILTuJxvnSz4F8ZpZ7NUf/+jVmxsqPWpk=";
+  };
+
+
+  nativeBuildInputs = [
+    pkgs.androidenv
+    pkgs.androidsdk
+    pkgs.androidndk
+    pkgs.nodejs-18_x
+    pkgs.yarn
+  ];
+  buildInputs = [
+    pkgs.androidenv
+    pkgs.androidsdk
+    pkgs.androidndk
+    pkgs.nodejs-18_x
+    pkgs.yarn
+  ];
+
+  buildPhase = ''
+    export ANDROID_HOME=${pkgs.androidsdk}/libexec
+    export ANDROID_NDK_HOME=${pkgs.androidndk}/libexec
+    export PATH=$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools:$PATH
+
+    yarn install
+    yarn android:build
+
+    # The APK is built in the android/app/build/outputs/apk/debug directory
+
+
+  '';
+
+  installPhase = ''
+    mkdir -p $out
+    cp -r android/app/build/outputs/apk/debug/app-debug.apk $out/lichess.apk
+
+  '';
+
+  meta = with lib; {
+    description = "Lichess mobile app";
+    license = licenses.mit;
+    platforms = platforms.android;
+    maintainers = with maintainers; [ ];
+  };
+
+}

flake.nix

@@ -1,8 +1,15 @@
 {
   description = "Build android applications with nix";
   inputs.nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
-  outputs = { self, nixpkgs }: {
-    packages.x86_64-linux.hello = nixpkgs.legacyPackages.x86_64-linux.hello;
-    packages.x86_64-linux.default = self.packages.x86_64-linux.hello;
+  outputs = { self, nixpkgs }:
+  let
+    system = "x86_64-linux";
+    pkgs = import nixpkgs { inherit system; };
+    callPackage = pkgs.callPackage;
+    stdenv = pkgs.stdenv;
+  in
+  {
+    packages.x86_64-linux.lichess = callPackage ./apks/li/lichess/package.nix { };
+    packages.x86_64-linux.default = self.packages.x86_64-linux.lichess;
   };
 }