Stream Tart stdout/stderr output to Packer UI #124
Merged
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Creating a Tart VM may involve long running operations such as downloading an IPSW, or installing the OS. Tart gives us progress during these operations, so let's forward it to the Packer UI, the same way the shell-local provisioner does.
If a packer.Ui is not provided, we keep the previous code path that returns the output to the caller, for example used by the TartMachineIP helper.