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Troubleshooting ​

Tauri Issues ​

tauri::generate_context!() panics ​

If you get this error:

   Compiling holochain_cascade v0.3.1
error: proc macro panicked
  --> src-tauri/src/lib.rs:47:14
   |
47 |         .run(tauri::generate_context!())
   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: message: failed to read icon /tmp/forum-scaffold-tauri-happ/src-tauri/icons/32x32.png: No such file or directory (os error 2)

error: could not compile `forum-scaffold-tauri-happ` (lib) due to previous error
    Error failed to build app: failed to build app

It means that you haven't generated the Tauri icons for your app yet. Follow these steps:

  1. Create or download the icon for your app. **It must be a square PNG image.

  2. In the root of your project, run this command:

bash
npm run tauri icon <PATH_TO_YOUR_ICON_IN_PNG_FORMAT>
bash
yarn tauri icon <PATH_TO_YOUR_ICON_IN_PNG_FORMAT>
bash
pnpm tauri icon <PATH_TO_YOUR_ICON_IN_PNG_FORMAT>

Error Have you installed the Android SDK? ​

If you get this error:

Error Have you installed the Android SDK? The `ANDROID_HOME` environment variable isn't set, and is required: environment variable not found: environment variable not found
npm run tauri android dev exited with code 1

It means you are trying to run your app in an Android device, but you are not inside your androidDev devShell, which is the one that includes the Android development environment and tooling.

Enter the androidDev devShell with:

bash
nix develop .#androidDev

And try again.

Error Android Studio project directory src-tauri/gen/android doesn't exist. ​

If you get this error:

 Error Android Studio project directory src-tauri/gen/android doesn't exist. Please run `tauri android init` and try again.

It means you haven't initialized your project for Android developm̀ent yet. You can do so by running:

bash
npm run tauri android init

And then try running your command again.

NixOS Issues ​

Connect to devices ​

In NixOS, the command adb devices needs root permissions, so you need to run it like this:

bash
sudo adb devices

Firewall ​

In NixOS, the firewall is enabled by default, which means that you can't directly run npm run network:android and have your Android device connect to the vite server running on your computer.

Disable the firewall to enable your Android device to connect to it:

  1. Identify firewall rule number:
bash
sudo iptables -L INPUT --line-numbers

Choose the firewall rule number that's blocking the connection (there is usually just one rule, if so pick that one).

  1. Remove firewall rule:
bash
sudo iptables -D INPUT <RULE_NUM>