Podspec mode doesn't pass through swift version 4.2 properly

[tackgyu]

I tried generating swift docs named TDS using jazzy using following command:
jazzy --podspec LocalPods/TDS/TDS.podspec --swift-version 4.2

and also tried with config file .jazzy.yaml like:

module: TDS
swift_version: 4.2

using following command:
jazzy --podspec LocalPods/TDS/TDS.podspec --config LocalPods/TDS/.jazzy.yaml

but both failed with the following output:

Running xcodebuild
Could not parse compiler arguments from `xcodebuild` output.
Please confirm that `xcodebuild` is building a Swift module.
Saved `xcodebuild` log file: /var/folders/0_/wjng6zns5r9btwdgnt7hcxc00000gn/T/xcodebuild-A5CA7AF9-153E-4658-A443-46B8456E5373.log
Failed to generate documentation
bundler: failed to load command: jazzy (/Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bin/jazzy)
RuntimeError: /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/bin/sourcekitten ["doc", "--module-name", "TDS", "--", "-target", "TDS", "SWIFT_VERSION\\=4.0"]

Running xcodebuild

Could not parse compiler arguments from `xcodebuild` output.

Please confirm that `xcodebuild` is building a Swift module.

Saved `xcodebuild` log file: /var/folders/0_/wjng6zns5r9btwdgnt7hcxc00000gn/T/xcodebuild-A5CA7AF9-153E-4658-A443-46B8456E5373.log

Failed to generate documentation

  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/lib/jazzy/executable.rb:36:in `execute_command'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/lib/jazzy/sourcekitten.rb:230:in `run_sourcekitten'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/lib/jazzy/podspec_documenter.rb:32:in `block (3 levels) in sourcekitten_output'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/lib/jazzy/podspec_documenter.rb:28:in `map'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/lib/jazzy/podspec_documenter.rb:28:in `block (2 levels) in sourcekitten_output'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/lib/jazzy/podspec_documenter.rb:23:in `chdir'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/lib/jazzy/podspec_documenter.rb:23:in `block in sourcekitten_output'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/gems/cocoapods-1.5.3/lib/cocoapods/config.rb:41:in `with_changes'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/lib/jazzy/podspec_documenter.rb:18:in `sourcekitten_output'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/lib/jazzy/doc_builder.rb:62:in `build'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/bin/jazzy:15:in `<top (required)>'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bin/jazzy:23:in `load'
  /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bin/jazzy:23:in `<top (required)>'

It seems to me that the swift version I passed as paramter is somehow ignored while jazzy passing its parameters to sourcekitten, regarding the line in the output says:
RuntimeError: /Users/tackgyu/Sources/toss-ios/vendor/bundle/ruby/2.4.0/bundler/gems/jazzy-6932e5efe0eb/bin/sourcekitten ["doc", "--module-name", "TDS", "--", "-target", "TDS", "SWIFT_VERSION\\=4.0"].

Does jazzy just not support Swift 4.2 yet, or can you at least let me know if there's a workaround for this issue if any?

[tackgyu]

Clearly jazzy currently does not support Swift 4.2 (as described in lib/podspec_documenter.rb, it creates version string using major version string with trailing .0), so I tried using different version of jazzy 0.7.3 of which the version extraction logic does not depend on major version value.

Then I failed again with the following output:

Build settings from command line:
    CODE_SIGN_IDENTITY = 
    CODE_SIGNING_REQUIRED = NO
    SWIFT_VERSION = "4.2"

note: Using new build system

** CLEAN SUCCEEDED ** [0.175 sec]

note: Using new build system
note: Planning build
note: Constructing build description
Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'FlexLayout')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'Atributika')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'RxSwift')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'RxCocoa')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'Atributika')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'FlexLayout')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'SkeletonView')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'Then')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'SnapKit')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'RxCocoa')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'SkeletonView')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'RxSwift')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'TDS')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'Then')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'SnapKit')

Build system information
error: Invalid SWIFT_VERSION: Could not parse version component from: '"4' (in target 'TDS')

** BUILD FAILED **

which I assume the Swift versions of target project and its dependencies do not match. So I guess we need to set different versions per pod basis, maybe by passing parameters through --xcodebuild-arguments option... So anyone have the idea doing this?

[bartekzabicki]

@tackgyu Did you find any solution for this? I have the same problem

[tackgyu]

@bartekzabicki Still nothing. Just have to wait for it to support Swift 4.2

[erdnussflips]

Could this PR fix that problem: #1019 ?

You can try it by installing the PR branch with https://github.com/rdp/specific_install

[tackgyu]

@erdnussflips Thanks for the updates, but I did make it work by not passing swift version parameter at all, as:
jazzy --podspec path/to/podspec --config path/to/config
which is odd, because the project setting has never changed since the last try. I will

I will leave this issue open and try your suggestion if I encounter the same issue.

[johnfairh]

Fixed in master via #1037.