SwiftNIO dependency causes build to fail

[andersonfds]

Installed patrol and followed the install guide and after that I'm unable to build my application, seems that SwiftNIO is causing this error

Is there any fix or workaround?

Thanks.

[bartekpacia]

Hi @andersonfds, thanks for reporting this,

It indeed looks strange – I havne't seen this before. What's your minimum iOS version (in Podfile and Xcode project settings?)

[andersonfds]

Minimum iOS prior to patrol was 12.1, I've changed to 13.0 as patrol requires 13.0

[andersonfds]

To reproduce the problem you just have to add this to your Podfile:

target.build_configurations.each do |config|
   config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '13.0'
   config.build_settings['BUILD_LIBRARY_FOR_DISTRIBUTION'] = 'YES' # This line seems to make it stop working
   config.build_settings['SWIFT_VERSION'] = '5.4'
end

[bartekpacia]

Can you share the repository with me or create a minimal, reproducible example? It really helps me get up to speed with such bugs :)

[andersonfds]

Okay, I created a minimal reproducible example. The problem is on the Podfile, specifically when you add the BUILD_LIBRARY_FOR_DISTRIBUTION flag. So basically if you remove that line it works beautifully, still, I need that flag for some other plugins on my application

Here's the repo link: https://github.com/andersonfds/patrol_bug_example

[bartekpacia]

Thank you, I'll take a look at it soon.

[wheeOs]

I'm also facing this issue. During my research for a solution I came across this here grpc/grpc-swift#1274 (the core: grpc/grpc-swift#1063 (comment)) and it seems like the bug is related to protobuf which patrol uses as a dependency.

I'm looking forward for a solution, since currently I have to exclude patrol from my project as my iOS builds won't work anymore otherwise

[wheeOs]

@andersonfds

this is what helps me out. But I hope there will be a solution within the project of patrol rather than on application level:

post_install do |installer|
  excluded_pods = [
  '_NIODataStructures',
  'gRPC-Swift',
  'SwiftNIO',
  'SwiftNIOCore',
  'SwiftNIOPosix',
  'SwiftNIOConcurrencyHelpers',
  'SwiftNIOExtras',
  'SwiftNIOFoundationCompat',
  'SwiftNIOHPACK',
  'SwiftNIOHTTP1',
  'SwiftNIOHTTP2',
  'SwiftNIOSSL',
  'SwiftNIOTLS',
  'SwiftNIOTransportServices'
  ]
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      unless excluded_pods.include?(target.name)
        config.build_settings['BUILD_LIBRARY_FOR_DISTRIBUTION'] = 'YES'
      end
    end
    flutter_additional_ios_build_settings(target)
  end
end

[bartekpacia]

@wheeOs I'm glad you found a workaround and shared it here. Thank you and sorry for the problems.

still, I need that flag for some other plugins on my application

What plugins require that flag?

[wheeOs]

What plugins require that flag?

@bartekpacia I think that wasn't addressed to me but I can say that this sdk requires that flag for example

[andersonfds]

Hey the plugins I'm using that requires that flag are intellectual property of one of my company's partner so I can't really talk about 'em but as @wheeOs said, there are some plugins out there that also requires that flag.

[bartekpacia]

SwiftNIO is no longer our dependency as of #1681.

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