HelloWorldServer doesn't work from the main branch

[mycroftcanner]

Describe the bug

The HelloWorldServer doesn't work from the main branch or from 1.9.0:

To reproduce

Steps to reproduce the bug you've found:

1. git clone -b 1.11.0 https://github.com/grpc/grpc-swift or git clone https://github.com/grpc/grpc-swift
2. cd grpc-swift
3. swift run HelloWorldServer

Describe what you expect to happen when the steps above are followed.

We would expect

[973/973] Linking HelloWorldServer
[...]
Building for debugging...
Build complete! (60.57s)
server started on port 1234

Instead the command just returns:

[973/973] Linking HelloWorldServer
[...]
[1029/1029] Linking HelloWorldServer
Build complete! (30.42s)

swift-driver version: 1.62.8 Apple Swift version 5.7 (swiftlang-5.7.0.127.4 clang-1400.0.29.50)
Target: arm64-apple-macosx13.0

[mycroftcanner]

Please that 1.0.0 (the version specified in the Quick Start) works fine.

[Lukasa]

Thanks for this! Try adding @main as shown in #1505. We reverted that temporarily because it broke our Swift 5.5 build, but that’s the correct fix.