> On Sep 18, 2017, at 8:54 AM, Maksym Grebenets via swift-dev > <swift-dev@swift.org> wrote: > > Hi all > > I guess like many other iOS devs with c/c++ background I really wanted to get > into Swift development one day, at least a tiny bit, at least to understand > how things work. > > So new refactoring tools and starter tasks finally pulled me in. > > With a lot of struggle and a lot of help from community I was able to > understand how lit works, how to walk the AST and write changes back to the > editor. I've got code and tests for new refactoring kind and new refactoring > action, so I was like "yay, time to build the keychain and just try it in > Xcode!!!". > > That's where I was thrown back to the "what do I do?" state again... > > I pulled latest master branch and ran build-toolchain and all of that just to > be told after almost an hour or so that there are 3 failing tests...
What were the failing tests? > > So I thought: > > cd swift > git checkout swift-DEVELOPMENT-SNAPSHOT-2017-09-15-a > cd .. > ./swift/utils/update-checkout --tag swift-DEVELOPMENT-SNAPSHOT-2017-09-15-a > > then build and fail again :(... So you are saying that you took the last "known good snapshot" and that also failed. How did it fail? On the same 3 tests? > > OK then, so I just disable the tests and give it another go: > > # build-presets.ini > #test > #validation-test > #long-test > > Yay! I got a toolchain! > I copy it over to /Library/Developer/Toolchains/ > Select it in Xcode (latest Xcode 9 GM) and... no luck > The source code highlighting disappears, > I get "An internal error occurred. Source editor functionality is limited..." > error. > All of the refactoring actions are disabled. > > I guess those 3 failing tests did matter in the end... > > > I may be frustrated, because I don't understand what's going on, but I don't > feel like giving up. > > I'd appreciate any help or advice I can get! > > Should I choose an older tag from before to get all tests passing? Do you mean before the last known good snapshot? If a snapshot was published on swift.org <http://swift.org/>, it /should/ pass all of the tests. > Should I build using Xcode beta rather then GM? You should be using the Xcode beta. This can be seen either via the README.md under System Requirements for macOS [and don't worry I run into this issue sometimes as well = )]. It is also documented on the CI: https://ci.swift.org <https://ci.swift.org/> with a nice link. > Is there any way to build/re-build the OS X toolchain any faster? > Why does it take so long even if I just re-run same command again? When you rerun is it not incremental? (I forgot TBH). In terms of the amount of work performed, build-toolchain command is intended to be used for producing snapshots and thus it has to be complete and include code for all platforms/etc. We could potentially have a preset that builds a toolchain only for 1 platform. I am not 100% sure if such a toolchain would work, but it should take significantly less time to build. Would that help? > Where did I get it wrong so the toolchain doesn't really work with Xcode? > Can I connect lldb to process that runs my lit tests? > > I'm sorry for having so many questions, but you can imagine there isn't a lot > of information for newbies like me trying to get into Swift compiler > development. Well, let's just say I couldn't find much :) I've just realized > that this mail list is better option that StackOverflow about an hour ago :) > Though, of course, I have read Brian Gesiak's posts and the swift.org > <http://swift.org/> blog post on refactoring. There are no bad questions or too many questions. Welcome to the dev-list = ). > > Just to sum up all of the above, how to I get to build local Xcode toolchain > which I can plug in to Xcode and test? Answer my questions above... I'll help you get across the finish line. On another note, I noticed you mention starter tasks: keep in mind there are more starter tasks than have been documented. If you are interested in a specific area of the compiler and can not find starter tasks in this area, please feel free to send a nice email to this list. I am sure we can find /something/ ; ). Michael > > Thank you! > _______________________________________________ > swift-dev mailing list > swift-dev@swift.org > https://lists.swift.org/mailman/listinfo/swift-dev
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