fix(ios): fix build when Metal Toolchain exist in the system

[setoelkahfi]

Fixes #14864

This pull request updates the way Swift library search paths are specified for iOS builds, ensuring they reference the correct Xcode toolchain location. The change replaces usage of the TOOLCHAIN_DIR variable with the explicit $(DEVELOPER_DIR)/Toolchains/XcodeDefault.xctoolchain path for both arm64 and x86_64 architectures. This adjustment fixes compatibility and reliability of iOS builds especially when MetalToolchain existed in the system.

Changes

Build configuration updates:

• Updated LIBRARY_SEARCH_PATHS for arm64 and x86_64 architectures in crates/tauri-cli/templates/mobile/ios/project.yml to use $(DEVELOPER_DIR)/Toolchains/XcodeDefault.xctoolchain instead of $(TOOLCHAIN_DIR) for Swift libraries.

Test fixture alignment:

• Updated LIBRARY_SEARCH_PATHS for arm64 and x86_64 in crates/tauri-cli/tests/fixtures/pbxproj/project.pbxproj to match the new toolchain path. [1] [2]
• Adjusted snapshot files in crates/tauri-cli/tests/fixtures/pbxproj/snapshots/tauri_cli__helpers__pbxproj__tests__project-modified.pbxproj.snap and project.pbxproj.snap to reflect the new library search paths. [1] [2] [3] [4]

[github-actions]

Package Changes Through 12f1658

There are 6 changes which include tauri-macos-sign with patch, tauri with minor, tauri-bundler with patch, tauri-cli with patch, @tauri-apps/cli with patch, tauri-utils with patch

Planned Package Versions

The following package releases are the planned based on the context of changes in this pull request.

package	current	next
tauri-utils	2.8.3	2.8.4
tauri-macos-sign	2.3.3	2.3.4
tauri-bundler	2.8.1	2.8.2
tauri-runtime	2.10.1	2.10.2
tauri-runtime-wry	2.10.1	2.10.2
tauri-codegen	2.5.5	2.5.6
tauri-macros	2.5.5	2.5.6
tauri-plugin	2.5.4	2.5.5
tauri-build	2.5.6	2.5.7
tauri	2.10.3	2.11.0
@tauri-apps/cli	2.10.1	2.10.2
tauri-cli	2.10.1	2.10.2

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[setoelkahfi]

Hi @lucasfernog — friendly bump on this one 🙂. The issue (#14864) is still easily reproducible on any Mac with the Metal Toolchain installed, and it completely blocks iOS builds. The fix is minimal (swapping $(TOOLCHAIN_DIR) for the explicit XcodeDefault.xctoolchain path) with tests already updated to match. Happy to address any feedback if needed!

[FabianLars]

it would be awesome if you could sign your commits and force push since we technically have branch protections set up enforcing this.

also, if you add a changefile i'll just merge this :)

[setoelkahfi]

@FabianLars done :)