CODEWITHSUNDEEP
swift4xcode9
Uba Duba
Uba Duba

Reputation: 241

Xcode 9 / Swift 4 migration error

I'm receiving errors when trying to automatically migrate to swift 4.

I'm getting "unexpected duplicate task" when trying to migrate a workspace with multiple targets.

Upvotes: 9

Views: 1198

Answers (2)

Gagan_iOS
Gagan_iOS

Reputation: 4080

Reference From BEm answer

I had the same problem. In my app I have three target

  • Dev
  • Pre
  • Prod

App was running in Dev but not in Pre & Prod.

When I open my under File > Workspace Settings, I had below (New Build System(Default))

enter image description here

I changed it to (Legacy Build System)

enter image description here

And it was a fix for me.

Upvotes: 4

Baran
Baran

Reputation: 2820

Had the same error when trying to migrate to swift 4. Check if you did enable the "New Build System (Preview)" under File > Workspace Settings. If you enabled it make sure to set it back to "Standard Build System". Did solve the problem for me.

Upvotes: 13

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