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[bug] bun tauri android init fails on Windows #14472

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#14476
Open
[bug] bun tauri android init fails on Windows#14472
#14476
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status: needs triageThis issue needs to triage, applied to new issuestype: bug
@junovell

Description

@junovell
junovell
opened on Nov 15, 2025

Describe the bug

Initializing a new android project on Windows using Bun fails, but it works as expected when using pnpm.

Reproduction

Must have android prerequisites and Bun installed.

ps> bun create tauri-app
ps> cd tauri-app && bun install
ps> bun tauri android init # fails, see stack trace below
ps> pnpm tauri android init # generates android files in `src-tauri/gen`

Full tauri info output

$ tauri info
 
[✔] Environment
    - OS: Windows 10.0.19045 x86_64 (X64)
    ✔ WebView2: 142.0.3595.80
    ✔ MSVC: Visual Studio Build Tools 2022
    ✔ rustc: 1.91.0 (f8297e351 2025-10-28)
    ✔ cargo: 1.91.0 (ea2d97820 2025-10-10)
    ✔ rustup: 1.28.2 (e4f3ad6f8 2025-04-28)
    ✔ Rust toolchain: stable-x86_64-pc-windows-msvc (default)
    - pnpm: 10.22.0
    - bun: 1.3.2
 
[-] Packages
    - tauri 🦀: 2
    - tauri-build 🦀: No version detected
    - wry 🦀: No version detected
    - tao 🦀: No version detected
    - @tauri-apps/api  ⱼₛ: not installed!
    - @tauri-apps/cli  ⱼₛ: 2.9.4
 
[-] Plugins
    - tauri-plugin-opener 🦀: 2
    - @tauri-apps/plugin-opener  ⱼₛ: not installed!
       Error Failed to parse version `2` for crate `tauri`
       Error Failed to parse version `2` for crate `tauri-plugin-opener`
 
[-] App
    - build-type: bundle
    - CSP: unset
    - frontendDist: ../build
    - devUrl: http://localhost:1420/
    - framework: Svelte
    - bundler: Vite

Stack trace

$ tauri android init
 
thread '<unnamed>' (4564) panicked at crates\tauri-cli\src\mobile\init.rs:87:16:
called `Option::unwrap()` on a `None` value
stack backtrace:
   0:     0x7ffcfb305791 - napi_register_module_v1
   1:     0x7ffcfaef0c0a - <unknown>
   2:     0x7ffcfb303fe4 - napi_register_module_v1
   3:     0x7ffcfb3055d4 - napi_register_module_v1
   4:     0x7ffcfb303c1c - napi_register_module_v1
   5:     0x7ffcfb30a8c3 - napi_register_module_v1
   6:     0x7ffcfb30a84f - napi_register_module_v1
   7:     0x7ffcfb30a83e - napi_register_module_v1
   8:     0x7ffcfb7f47d1 - napi_register_module_v1
   9:     0x7ffcfb7f483d - napi_register_module_v1
  10:     0x7ffcfb7f47fe - napi_register_module_v1
  11:     0x7ffcfb5a43e7 - napi_register_module_v1
  12:     0x7ffcfb5982a6 - napi_register_module_v1
  13:     0x7ffcfae44fc4 - <unknown>
  14:     0x7ffcfae53845 - <unknown>
  15:     0x7ffcfb3184fd - napi_register_module_v1
  16:     0x7ffd212c7374 - BaseThreadInitThunk
  17:     0x7ffd2293cc91 - RtlUserThreadStart
error: script "tauri" exited with code 9

Additional context

The bug happens in this block of code, line 87:

tauri/crates/tauri-cli/src/mobile/init.rs

Lines 77 to 96 in ad1dec2

if let Some(bin_stem) = bin_path.file_stem() {
let r = regex::Regex::new("(nodejs|node)\\-?([1-9]*)*$").unwrap();
if r.is_match(&bin_stem.to_string_lossy()) {
if var_os("PNPM_PACKAGE_NAME").is_some() {
return ("pnpm".into(), build_args);
} else if is_pnpm_dlx() {
return ("pnpm".into(), vec!["dlx", "@tauri-apps/cli"]);
} else if let Some(npm_execpath) = var_os("npm_execpath") {
let manager_stem = PathBuf::from(&npm_execpath)
.file_stem()
.unwrap()
.to_os_string();
let is_npm = manager_stem == "npm-cli";
let binary = if is_npm {
"npm".into()
} else if manager_stem == "npx-cli" {
"npx".into()
} else {
manager_stem
};

Which doesn't seem to check for bun. Although, weirdly, on Linux this bug doesn't happen.

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