Question 243083 in Xcode Question posted in
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What is the new option ENABLE_USER_SCRIPT_SANDBOXING in Xcode 15?

After downloading the Xcode 15 beta and running my project, I get a warning to update the project to recommended settings with

Enable User Script Sandboxing

Enabling user script sandboxing is recommended to ensure correctness of the build. This will enable the
ENABLE_USER_SCRIPT_SANDBOXING build setting.

What are the implications? When should it enabled/disabled? What if I have i.e. SwiftGen set as a build phase?

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Answers


  1. 0

    If it gives problems for your project, you can simply change ENABLE_USER_SCRIPT_SANDBOXING = YES back to NO in project.pbxproj if needed.
    In the Xcode GUI it is a boolean pick list or ASCII text (depending what you select for "open as".

    I tried the recommended YES setting on my own project, but I got complaints that my case (SwiftLint) was trying to read some non-Swift files. These were .git, .github, projectname.xcodeproj and a file related to string localisation. Clearly none of these 4 files were .swift files, so SwiftLint was over-zealous in opening these 4 files. And Xcode was more-or-less right to cause the build to fail when SwiftLint runs in a sandbox.

    Surprisingly, I didn’t find others complaining about this yet. But I expect SwiftLint will address this during the Xcode 14 beta phase.

    Where to change the setting, and the error messages that I got. Ignore the 6779 number – probably a line number rather than an error code

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  2. 0

    User Script Sandboxing
    Setting name: ENABLE_USER_SCRIPT_SANDBOXING

    If enabled, the build system will sandbox user scripts to disallow undeclared input/output dependencies.

    A typical error like this:

    Sandbox: swiftlint(97252) deny(1) file-read-data /YourProject/.swiftlint.yml

    is solved with

    Input Files
$(SRCROOT)/.swiftlint.yml
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