Add adb persistence

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/system/configs/android/default.nix

@@ -1,5 +0,0 @@
-{ ... }:
-{
-  programs.adb.enable = true;
-  services.gvfs.enable = true;
-}

hosts/common/user/configs/console/android/default.nix

@@ -1,7 +1,26 @@
 {
   username ? throw "username argument is required",
 }:
-{ ... }:
+{ config, pkgs, ... }:
+let
+  userConfig = config.users.users.${username};
+  hmConfig = config.home-manager.users.${username};
+  android-tools = pkgs.android-tools.overrideAttrs (oldAttrs: {
+    patches = oldAttrs.patches or [ ] ++ [ ./env-var-user-home.patch ];
+  });
+in
 {
+  services.udev.packages = with pkgs; [ android-udev-rules ];
+  environment.systemPackages = [ android-tools ];
+  services.gvfs.enable = true;
+
   users.users.${username}.extraGroups = [ "adbusers" ];
+
+  home-manager.users.${username}.home = {
+    sessionVariables.ANDROID_USER_HOME = "${hmConfig.xdg.dataHome}/android";
+    persistence."/persist${userConfig.home}".files = [
+      "${hmConfig.xdg.dataHome}/android/adbkey"
+      "${hmConfig.xdg.dataHome}/android/adbkey.pub"
+    ];
+  };
 }

hosts/common/user/configs/console/android/env-var-user-home.patch

@@ -0,0 +1,21 @@
+--- a/vendor/adb/adb_utils.cpp
++++ b/vendor/adb/adb_utils.cpp
+@@ -308,8 +308,16 @@
+ }
+
+ std::string adb_get_android_dir_path() {
+-    std::string user_dir = adb_get_homedir_path();
+-    std::string android_dir = user_dir + OS_PATH_SEPARATOR + ".android";
++    const char* android_user_home = getenv("ANDROID_USER_HOME");
++    std::string android_dir;
++
++    if (android_user_home) {
++        android_dir = std::string(android_user_home);
++    } else {
++        std::string user_dir = adb_get_homedir_path();
++        android_dir = user_dir + OS_PATH_SEPARATOR + ".android";
++    }
++
+     struct stat buf;
+     if (stat(android_dir.c_str(), &buf) == -1) {
+         if (adb_mkdir(android_dir, 0750) == -1) {

hosts/eirene/default.nix

@@ -1,6 +1,5 @@
 {
   imports = [
-    ../common/system/configs/android
     ../common/system/configs/bluetooth
     ../common/system/configs/boot
     ../common/system/configs/brightnessctl