The builds were broken due to multiple issues:
- sigh has problems "forcing" ad hoc profiles, so we're no longer passing the force argument
- Needed to use gym to disable bitcode when compiling both the app and its dependencies (see our Gymfile)
- A couple of CI workarounds that are now documented on our Continuous Integration page:
- Allowing xcodebuild access to the keychain
- Specifying the PATH env var for running xctool
As a result I had to resolve both the blocking tasks attached to this ticket in order for alpha builds to work.