> On 24 Oct 2017, at 17:00, Ron Olson via swift-dev <swift-dev@swift.org> wrote: > > Hi all- > > I am able to build Swift 4 on Fedora 26 Linux > (https://github.com/tachoknight/swift-rpm) and while it can compile and run > Swift code just fine, the REPL does not start because of: > > error: failed to launch REPL process: process launch failed: 'A' packet > returned an error: -1
This occurs when you are running the docker image without a --privileged flag, or without a --cap-add=SYS_PTRACE flag. You are not able to debug any running program, and since the Swift REPL is implemented as a front-end to an lldb debugging instance, it follows that the Swift REPL will not work without the container being launched without either of those flags. Alex _______________________________________________ swift-dev mailing list swift-dev@swift.org https://lists.swift.org/mailman/listinfo/swift-dev
