I have a custom pod that is currently deployed via a private cocoapods specs repo. Is there any way to point the 'sharpie' command line tool to my specs rather than use the normal master specs repo?
Sorry, there is no way to do that. The current implementation specifically states it uses the master specs repo.
Pod support is brand new, so you might want to put in a feature request (https://bugzilla.xamarin.com/) to allow this option.
Done thx. https://bugzilla.xamarin.com/show_bug.cgi?id=39329
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