Stellar does not play well with Carthage

For months now I have problem using Stellar with Carthage. I have to ways to solve the problems: 1/ by "manually" building Stellar framework after changing stuff in Xcode project or 2/ by adding sources to my project. But as for now the last option does not work because the code imported using Carthage is not the last one on GitHub...

So there is definitely something wrong with Carthage.