Tauri mobile debugging (Android/iOS)

[setoelkahfi]

I'm trying to setup a proper debugging experience for my tauri project. The desktop target works fine, but the Android target doesn't. Here's my launch.json file:

    {
      "type": "lldb",
      "request": "launch",
      "name": "Desktop Development",
      "cargo": {
        "args": [
          "build",
          "--manifest-path=./frontend/splitfire-desktop/src-tauri/Cargo.toml",
          "--no-default-features"
        ]
      },
      // task for the `beforeDevCommand` if used, must be configured in `.vscode/tasks.json`
      "preLaunchTask": "ui:dev"
    },
    {
      "type": "lldb",
      "request": "launch",
      "name": "Android Development",
      "program": "cargo",
      "args": [
        "tauri",
        "android",
        "dev"
      ],
      "cwd": "${workspaceFolder}/frontend/splitfire-desktop",
      "env": {
        "RUST_LOG": "debug"
      },
      "sourceLanguages": ["rust"]
    },

I can't use the official cargo support per this docs because tauri cli is a cargo subcommand. Or maybe I missed something.

I could probably use the cargo support, but when I set it up like this:

    {
      "type": "lldb",
      "request": "launch",
      "name": "Android Development",
      "cargo": {
        "args": [
          "tauri",
          "android",
          "dev"
        ],
      },

I got error:

*  Executing task: CodeLLDB: cargo 

Running `cargo tauri android dev --message-format=json --color=always`...
error: unexpected argument '--message-format' found

 tip: to pass '--message-format' as a value, use '-- --message-format'

Usage: cargo tauri android dev [OPTIONS] [DEVICE]

For more information, try '--help'.
Error: Cargo invocation failed.
   at t.Cargo.getCargoArtifacts (/Users/setoelka/.vscode/extensions/vadimcn.vscode-lldb-1.11.4/extension.js:1:6907)
   at processTicksAndRejections (node:internal/process/task_queues:95:5)
   at Object.open (/Users/setoelka/.vscode/extensions/vadimcn.vscode-lldb-1.11.4/extension.js:1:5210)
Caused by: Error: exit code: 2.
   at ChildProcess.<anonymous> (/Users/setoelka/.vscode/extensions/vadimcn.vscode-lldb-1.11.4/extension.js:1:8574)
   at ChildProcess.emit (node:events:518:28)
   at maybeClose (node:internal/child_process:1104:16)
   at Process.ChildProcess._handle.onexit (node:internal/child_process:304:5)
*  The terminal process failed to launch (exit code: 1). 
*  Terminal will be reused by tasks, press any key to close it. 

Any pointer?

[vadimcn]

CodeLLDB expects cargo to build the target binary and output it's location in JSON format, so it knows what to launch. Unless the tauri subcommand can produce JSON compatible with standard cargo subcommands, you won't be able to use it as a part of launch configuration.

By default, when remote debugging, LLDB will deploy your binary to the target device, so you can use standard cargo build... and let LLDB do the copying: https://lldb.llvm.org/use/remote.html#launching-a-locally-built-process-on-the-remote-machine.
If your deployment process is more involved (e.g., deploys assets, starts an emulator), you can move cargo tauri... to tasks.json, run that task before debugging via preLaunchTask, and just tell CodeLLDB where to find the binary both locally and on the device: https://lldb.llvm.org/use/remote.html#install-and-run-by-specifying-a-remote-install-path