swift_version in the Podspec isn't reflected in the generated Xcode project(s)

[Buzz-Lightyear]

My Pod requires Swift 5 to compile and I set it in the Podspec:

  s.swift_version = '5.0'

However, the generated Xcode project still sets the version to 4.0:

smuthu in ~/Sandbox/ios-video-player on branch master >grep 'SWIFT_VERSION = 4.0' ./ -r --color=auto -n
...
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:9874:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:9916:				SWIFT_VERSION = 4.0;
...
.//GeneratedWorkspace/Workspace/Workspace.xcodeproj/project.pbxproj:287:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Workspace.xcodeproj/project.pbxproj:374:				SWIFT_VERSION = 4.0;

I was able to run

find . -name '*.pbxproj' -print0 | xargs -0 sed -i "" "s/SWIFT_VERSION\ =\ 4.0/SWIFT_VERSION\ =\ 5.0/g"

and confirmed that my targets build correctly.

cocoapods-generate should respect the swift_version flag and reflect it in the generated Xcode projects.

[Buzz-Lightyear]

I apologize, the setting actually comes from our plugins.

[Buzz-Lightyear]

Actually, I take that back. I ran pod gen and the Swift version is definitely set to 4.0 before our plugins do anything:

smuthu in ~/Sandbox/ios-video-player on branch master >pod gen LIVideoPlayer.podspec LIVideoPlayerGoogleCastPlayback.podspec [email protected]:multiproduct/podspec-repo.git --local-sources=./ --gen-directory=GeneratedWorkspace --clean --repo-update --single-workspace --auto-open
I, [2022-03-08T11:43:35.229056 #43257]  INFO -- : Running mint dependency create-dependency-spec --overwrite to create default dependency spec

Updating specs repos
Updating spec repo `githubprivate-multiproduct-podspec-repo`

Generating workspace in `GeneratedWorkspace/Workspace`
    $ /usr/bin/open /Users/smuthu/Sandbox/ios-video-player/GeneratedWorkspace/Workspace/Workspace.xcworkspace
smuthu in ~/Sandbox/ios-video-player on branch master >grep 'SWIFT_VERSION = 4.0' ./ -r --color=auto -n
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:9856:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:9891:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:9925:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:9960:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:9994:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10029:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10064:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10100:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10170:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10206:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10241:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10277:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10312:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10348:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10383:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10419:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10454:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10490:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10793:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10829:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10863:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10898:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10933:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:10969:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:11003:				SWIFT_VERSION = 4.0;
.//GeneratedWorkspace/Workspace/Pods/Pods.xcodeproj/project.pbxproj:11038:				SWIFT_VERSION = 4.0;

[aryamansharda]

We're having the same issue with one of our local Pods.

We've specified our preferred Swift version in the Podfile for our new dependency and while it honors that, it doesn't carry over to the spec's dependency. In other words, AnimationViewWrapper is correctly set to Swift 5, but lottie-ios is still Swift 4.

Pod::Spec.new do |spec|
  spec.name = "AnimationViewWrapper"
  spec.version = "0.1"
   ....
  spec.license = { type: "Private" }
  spec.homepage = "..."
  spec.summary = "A wrapper around Lottie for animations."
  spec.source = { git: "..." }
  spec.swift_version = '5'
  spec.source_files = [
    "Sources/**/*.swift"
  ]
  spec.ios.deployment_target = '15.0'
  spec.watchos.deployment_target = '7.0'
  spec.platform = :ios, '15.0'
  spec.dependency 'lottie-ios', '3.4.1'
end