Hi Alex-
Thanks for the info, but this isn't in a Docker container, just a
regular Linux VM.
As an additional bit of info, I ran the build script on my Fedora
laptop, and it works just fine; the REPL starts right up. I'd be
surprised and confused if this was truly a VM (in this case, VMware
ESXi) issue, but stranger things have happened I guess.
Ron
On 24 Oct 2017, at 12:11, Alex Blewitt wrote:
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
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