Conflict using Firestore and a Pod using gRPC-Swift as a dependency its podspec file

[nshoura]

What are you trying to achieve?

Use gRPC-Swift as a dependency in a .podspec file of a Pod, let's call it X, and use X in a project where Firebase/Firestore is used as well:

Project's Podfile:

target '<Project name>' do
  use_frameworks!

  pod 'Firebase/Firestore'
  pod 'X'
end

X.podspec file:

Pod::Spec.new do |spec|
  spec.name = "X"
  spec.dependency 'gRPC-Swift', '1.0.0-alpha.21'
end

This results in the same problem mentioned in this issue.

What have you tried so far?

I have tried the solution mentioned here. However, this solution doesn't work when gRPC-Swift is used as a dependency for another pod since, in podspec files, it's only allowed to define the name and the version specifier of a Pod and it's not possible to provide a specific podspec file. Basically, the following isn't valid in a podspec file: s.dependency 'gRPC-Swift', :podspec => 'gRPC-Swift.podspec'

[glbrntt]

Unfortunately I don't think we have a solution for this. It boils down to the fact that module name for one of the pods from https://github.com/grpc/grpc is 'grpc' while our module name is 'GRPC'. Changing either of these names isn't really feasible for either project at this point.

[nshoura]

In case anyone is struggling with this, I've fixed it by running a script after the pods are installed to use the custom gRPC-Swiftmodule name in the Pod that has a dependency on gRPC-Swift:

post_install do |installer|

  string_to_replace = "import GRPC"
  string_replacement = "import <gRPC-Swift custom module name>"

  # Find all ruby files in this directory and its subdirectories.
  Dir.glob('./Pods/<The name of the Pod depending on gRPC-Swift>/**/*.swift').each do |file|

    # Read the file and store the contents in memory.
    content = File.read(file)
    # Don't do anything if the file doesn't include "import GRPC".
    next unless content.include?(string_to_replace+"\n")
    # Unlock the file to enable writing to it.
    File.chmod(0600, file)
    # Rewrite the file after replacing "import GRPC" with "import <gRPC-Swift custom module name>".
    File.open(file, 'w+') { |f| f.write(content.gsub(string_to_replace, string_replacement)) }
    # Relock the file.
    File.chmod(0444, file)
  end
end

[Artfire]

@nshoura hi,

Thanks for your solution but I want to clarify one moment. For me:
post_install do |installer|
will not be called, because I have
[!] The 'Pods-MyProject' target has frameworks with conflicting names: grpc.
before post_install do |installer| will be executed and the script stops.

For example here is Podfile where I want to test that post_install do |installer| is not executed.
SkarbSDK depends on gRPC-Swift:

platform :ios, '11.2'

target 'MyProject' do
  use_frameworks!
  pod 'Firebase/Firestore'
  pod 'SkarbSDK'
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    puts "#{target.name}"
  end
end

If I run pod install I will not see the output for the project targets, because in terminal I see[!] The 'Pods-MyProject' target has frameworks with conflicting names: grpc. stops the script. If I comment pod 'Firebase/Firestore' or pod 'SkarbSDK' the project targets will be printed into terminal.

Any help is appreciated,
Thanks.

[CureleaAndrei]

Hi, I am facing the same issue right now. Have you find a solution ?

[Artfire]

@CureleaAndrei hi,
I've just used Firebase with SPM and other with Cocoapods, and it works for me