Improve Xcode handling of external project chnages

Number:rdar://27124693 Date Originated:01-Jul-2016 07:37 AM
Status:Open Resolved:
Product:Developer Tools Product Version:Xcode 7 and 8 beta
Classification:UI/Usability Reproducible:Sometimes

When using version control (say command line GIT) to checkout a different version of our project we frequently get into situations where a bunch of our workspace projects are modified externally. This confuses Xcode and results in long sequences of reload alerts being presented. 

Steps to Reproduce:

Use version control to check out an older version of a sufficiently complex workspace. 

Expected Results:

Xcode would detect that several projects were modified and offer to reload the entire workspace. 

Actual Results:

A sequence of alerts is presented, promoting to reload every single project that changed. See the attached GIF. It can even get much worse that this for us. 


Happens in every Xcode version so far. Including Xcode 8 beta. 


The workaround is to have Xcode closed during the checkout. It’s not a very convenient one though, as you might forget to do this or have to do it frequently during some operations (say bisecting the history to find a regression).



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