From 8e79faeab09aad2b8d6861dd2baa95b419255c90 Mon Sep 17 00:00:00 2001
From: quapka
Date: Fri, 20 Jun 2025 22:56:33 +0200
Subject: Wrap building applet, reader and common with Nix

---
 README.md | 20 ++++++++++++++++++
 flake.nix | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 91 insertions(+)

diff --git a/README.md b/README.md
index 5c43f2d..ab4ec9e 100644
--- a/README.md
+++ b/README.md
@@ -358,6 +358,26 @@ with a given library version and arguments do:
 nix run "?submodules=1#libressl.v392" -- test default LibreSSL
 ```
 
+To build the JavaCard applets:
+```shell
+nix build "?submodules=1#applets"
+# or individually
+nix build "?submodules=1#applet222"
+nix build "?submodules=1#applet305"
+nix build "?submodules=1#applet320"
+```
+
+To build or run the reader you can:
+```shell
+nix build '.?submodules=1#reader'
+nix run '.?submodules=1#reader'
+```
+
+If needed, you can also build the `common` library:
+```shell
+nix build '.?submodules=1#common'
+```
+
 #### Gradle
 
 ```shell
diff --git a/flake.nix b/flake.nix
index 6ca0ef9..9ede30e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -689,6 +689,63 @@
             }
           );
 
+        buildReader = { jdkVersion ? pkgs.jdk17_headless }: with pkgs; gradle2nix.builders.${system}.buildGradlePackage rec {
+          pname = "ECTesterReader";
+          version = "0.3.3";
+          lockFile = ./gradle.lock;
+          buildJdk = pkgs.jdk_headless;
+          gradleBuildFlags = [ ":reader:uberJar" ];
+          src = ./.;
+
+          installPhase = ''
+            mkdir -p $out
+            cp -r reader/build $out
+          '';
+
+          nativeBuildInputs = [ makeWrapper ];
+
+          postFixup = ''
+            makeWrapper \
+              ${jdk_headless}/bin/java $out/bin/${pname} \
+              --add-flags "-Dstdout.encoding=UTF8 -Dstderr.encoding=UTF8 -jar $out/build/libs/${pname}.jar"
+          '';
+        };
+
+        buildApplet = { jdkVersion ? pkgs.jdk8_headless }: with pkgs; gradle2nix.builders.${system}.buildGradlePackage rec {
+          pname = "applet";
+          # since the gradle target builds applets for multiple JC SDKs, the
+          # single version cannot reflet that
+          version = "0.3.3";
+          lockFile = ./gradle.lock;
+          buildJdk = jdkVersion;
+          gradleBuildFlags = [ ":applet:buildJavaCard" ];
+          src = ./.;
+
+          installPhase = ''
+            mkdir --parents $out
+            cp --recursive applet/build/* $out
+          '';
+
+          nativeBuildInputs = [ makeWrapper ];
+        };
+
+        buildCommon = { jdkVersion ? pkgs.jdk17_headless }: with pkgs; gradle2nix.builders.${system}.buildGradlePackage rec {
+          pname = "common";
+          version = "0.3.3";
+          lockFile = ./gradle.lock;
+          buildJdk = jdkVersion;
+          gradleBuildFlags = [ ":common:build" ];
+          src = ./.;
+
+          installPhase = ''
+            mkdir --parents $out
+            cp --recursive common/build/* $out
+          '';
+
+          nativeBuildInputs = [ makeWrapper ];
+        };
+
+
         defaultVersion =
           # Default version is the last one, aka the newest that we fetched
           libName:
@@ -774,6 +831,20 @@
             function = buildECTesterStandalone;
           };
 
+          reader = buildReader {};
+          common = buildCommon {};
+          applets = pkgs.buildEnv {
+            name = "applets";
+            paths = [
+              applet222
+              applet305
+              applet320
+            ];
+          };
+          applet222 = buildApplet { jdkVersion = pkgs.jdk8_headless; };
+          applet305 = buildApplet { jdkVersion = pkgs.jdk8_headless; };
+          applet320 = buildApplet { jdkVersion = pkgs.jdk17_headless; };
+
           shim = {
             tomcrypt = loadVersionsForShim {
               libName = "tomcrypt";
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