最近剛拿到公司的 Mac Book Pro M3，

想用 Capacitor 編譯 iOS app 時，

出現了 Skipping pod install because CocoaPods is not installed 的錯誤訊息：

$ npx cap run ios

✔ Copying web assets from www to ios/App/App/public in 75.21ms
✔ Creating capacitor.config.json in ios/App/App in 540.13μs
[info] Inlining sourcemaps
✔ copy ios in 83.09ms
✔ Updating iOS plugins in 481.67μs
[warn] Skipping pod install because CocoaPods is not installed
✔ Updating iOS native dependencies with pod install in 747.37ms
✔ update ios in 787.30ms
[error] native-run failed with error

        [object Object]: Unable to retrieve simulator list: Reduce of empty array with no initial value

 

雖然好像只是個警告訊息，但接下來的編譯就都沒有成功…

照著網路上的文章，想用 gem 來安裝 CocoaPods，

(gem 是 Ruby 的套件管理員，CocoaPods 是 Swift/Objective-C 的套件管理員)

印象中在舊的 Mac Book Pro (Intel) 沒有問題，

但在 Apple M3 上就卡住了… 我只能按 Ctrl-C 來中斷：

$ sudo gem install cocoapods

^CERROR:  Interrupted

 

加上  --debug 參數看看它在做什麼…

它陷在無窮迴圈，感覺像是有檔案不存在，但我也不知道原因…

$ gem install --debug cocoapods

NOTE:  Debugging mode prints all exceptions even when rescued
Exception `LoadError' at /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/resolv.rb:170 - LoadError
Exception `Gem::RemoteFetcher::FetchError' at /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/remote_fetcher.rb:244 - bad response Not Found 404 (https://rubygems.org/api/v1/dependencies)
Exception `Gem::RemoteFetcher::FetchError' at /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/remote_fetcher.rb:274 - bad response Not Found 404 (https://rubygems.org/api/v1/dependencies)
Exception `Errno::EEXIST' at /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/fileutils.rb:239 - File exists @ dir_s_mkdir - /Users/testuser/.gem/specs/rubygems.org%443
Exception `Errno::EEXIST' at /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/fileutils.rb:239 - File exists @ dir_s_mkdir - /Users/testuser/.gem/specs/rubygems.org%443
Exception `Errno::EEXIST' at /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/fileutils.rb:239 - File exists @ dir_s_mkdir - /Users/testuser/.gem/specs/rubygems.org%443/quick/Marshal.4.8
Exception `Errno::EEXIST' at /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/fileutils.rb:239 - File exists @ dir_s_mkdir - /Users/testuser/.gem/specs/rubygems.org%443/quick/Marshal.4.8
......

 

亂爬文的時候，看到有人是用 Homebrew 來安裝 CocoaPods 的，

一試就成功了，有看到它是去抓 arm64 用的套件：

brew install cocoapods

 

再度用 Capacitor 來編譯，這次就成功囉～

$ npx cap run ios

✔ Copying web assets from www to ios/App/App/public in 77.52ms
✔ Creating capacitor.config.json in ios/App/App in 512.04μs
[info] Inlining sourcemaps
✔ copy ios in 85.72ms
✔ Updating iOS plugins in 429.21μs
✔ Updating iOS native dependencies with pod install in 1.96s
✔ update ios in 2.02s
✔ Please choose a target device: › iPhone 15 Pro Max (simulator) (54F8AB04-85EF-471C-AC2E-439883B98D00)
✔ Running xcodebuild in 20.07s
✔ Deploying App.app to 54F8AB04-85EF-471C-AC2E-439883B98D00 in 23.68s