Swift.org issue with open source swift project. Error: xcrun: error: unable to find utility "launch-with-toolchain", not a developer tool or in PATH

Question

I am trying to Start Xcode with the custom toolchain and to be enabled to use the open source version of Swift.

Steps are taken from Swift.org

And I receive this error:

xcrun: error: unable to find utility "launch-with-toolchain", not a developer tool or in PATH

With what parameters did you call xcrun? Do you have the latest Xcode 7.2 installed on El Capitan? — Martin R, Dec 04 '15 at 13:43
Yes i am using latest El Capitan and two Xcode 7.2 and Xcode 6.4 — Oleg Gordiichuk, Dec 04 '15 at 13:44
FWIW, it doesn't work for me either, `xcrun launch-with-toolchain /Library/Developer/Toolchains/swift-latest.xctoolchain` produces the same error. — Eric Aya, Dec 04 '15 at 14:02
@EricD.: Would you mind to check if the solution works for you as well? — Martin R, Dec 04 '15 at 14:24

score 38 · Accepted Answer · answered Dec 04 '15 at 14:15

38

The open source Swift toolchain from https://swift.org/download/#apple-platforms requires the latest Xcode 7.2 (currently: beta 4).

The location of the developer directory used by xcrun and other build tools must be set to this Xcode 7.2. This can be done from the command-line with

sudo xcode-select -s /path/to/Xcode7.2-beta.app/Contents/Developer

or in the Xcode "Locations" preferences:

answered Dec 04 '15 at 14:15

Martin R

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thx for quick response problem was in the issue that you describe. Thx for that! – Oleg Gordiichuk Dec 04 '15 at 14:21
This fixed my issue, Why it's not atomically selects the latest or at least one of them? – Pini Cheyni Feb 14 '19 at 08:36

Swift.org issue with open source swift project. Error: xcrun: error: unable to find utility "launch-with-toolchain", not a developer tool or in PATH

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