1.7.3
$GEM_HOME fix/workaround:
Fixes the Error Domain=IDEDistributionErrorDomain Code=14 "No applicable devices found." error. If $GEM_HOME is set and the project's directory includes a Gemfile, xcodebuild -exportArchive can fail with this error.
To fix this the Step unsets GEM_HOME right before xcodebuild -exportArchive, as that's not required for xcodebuild anyway.