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Unxip experiment failing to unarchive Xcode 26.4 Beta 2 & Beta 3

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
30/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
macos, swift
Domain
desktop

Research direction

Start by reproducing the hang in the unxip experiment's unarchive phase with Xcode 26.4 Beta 2 or Beta 3 while the experiment is enabled. Done means those versions unarchive successfully with the experiment enabled; disabling the experiment is the reported workaround.

Written by the indexing model from the issue text.

Description

bug

Xcodes 3.0.2 on 26.3.1 (25D2128). Had the unxip experiment enabled and I noticed it was hanging in the unarchive phase on Xcode 26.4 Beta 2 & Beta 3. It was working fine before that.

Disabling the experiment fixed it for me,

Dominant language
Swift
Stars
8.6k
Forks
387
Avg merge
6d 7h
Merged PRs (30d)
3

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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