Example doesn't run from Xcode about swiftsemantics HOT 6 CLOSED

I'm very happy to report that this is working in Xcode 12.5 with the latest OSS Toolchain. I updated the README with fb4aa13.

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Its not a proper fix, but I did manage to have some luck in Xcode 12.2 by doing the following:

1. Edit the scheme, add the DYLD_PRINT_RPATHS environment var and set it's value to 1
2. Look at the console output to see the directory where the dylib is trying to be loaded from
3. Find the dylib in Xcode (i.e find /Applications/Xcode-12.2.app -name lib_InternalSwiftSyntaxParser.dylib)
4. Add a symbolic between where the actual dlyb is in Xcode and where the library is trying to be loaded from

Not ideal, but was enough to get things working at least so I could poke around rather than generating the xcodeproj

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Thanks for writing in about this, @chriseidhof. I was hitting the same issue when trying to run unit tests. I think upgrading SwiftSyntax to a newer release should fix the issue, but I'd held off on that until I shipped this initial release. This is a great reminder to take another look.

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@chriseidhof I tried fixing this by targeting a different release of SwiftSyntax, but wasn't able to get any of the other tags to work. Until a better solution is provided upstream, my suggestion would be to run swift package generate-xcodeproj to generate an Xcode project and then xed <#Package#>.xcodeproj to open the generated project directly.

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@chriseidhof I'm happy to report that this is fixed in the latest Swift 5.2 development builds. I'll wait to close this until the most recent Xcode GM can build and run tests on SwiftSemantics master without a problem.

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Update: It looks like this still isn't working in Xcode 11.4.

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