CocoaPods could not find compatible versions for pod "RCT-Folly":

[OmkarK45]

Environment

System:
  OS: macOS 14.6.1
  CPU: (8) arm64 Apple M1 Pro
  Memory: 82.47 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 18.18.2
    path: ~/.nvm/versions/node/v18.18.2/bin/node
  Yarn:
    version: 1.22.19
    path: ~/.nvm/versions/node/v18.18.2/bin/yarn
  npm:
    version: 9.8.1
    path: ~/.nvm/versions/node/v18.18.2/bin/npm
  Watchman: Not Found
Managers:
  CocoaPods:
    version: 1.15.2
    path: /opt/homebrew/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.1
      - iOS 18.1
      - macOS 15.1
      - tvOS 18.1
      - visionOS 2.1
      - watchOS 11.1
  Android SDK: Not Found
IDEs:
  Android Studio: 2024.1 AI-241.18034.62.2411.12071903
  Xcode:
    version: 16.1/16B40
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.11
    path: /usr/bin/javac
  Ruby:
    version: 2.6.10
    path: /usr/bin/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 15.0.1
    wanted: 15.0.1
  react:
    installed: 18.3.1
    wanted: 18.3.1
  react-native:
    installed: 0.76.4
    wanted: 0.76.4
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: false
iOS:
  hermesEnabled: Not found
  newArchEnabled: false

Things I’ve done to figure out my issue

• I used upgrade-helper to do my upgrade.

Upgrading version

• Upgrading to React Native 0.76.4

Description

• I've applied changes from the upgrade helper in my react native project, when trying to install pods, I get the following error

[!] CocoaPods could not find compatible versions for pod "RCT-Folly":
  In Podfile:
    RCT-Folly (from `../node_modules/react-native/third-party-podspecs/RCT-Folly.podspec`)

    React-rendererdebug (from `../node_modules/react-native/ReactCommon/react/renderer/debug`) was resolved to 0.76.4, which depends on
      RCT-Folly (= 2024.01.01.00)

Reproducible demo

• WIP

[incognos]

Hi,

change this line:
pod 'Folly', :podspec => '../node_modules/react-native/third-party-podspecs/Folly.podspec'

into

pod 'RCT-Folly', :podspec => '../node_modules/react-native/third-party-podspecs/RCT-Folly.podspec'

And that will be the start of the pain... more to come.

[OmkarK45]

@incognos Thanks for checking. I don't have any such line in my podfile to begin with :/

[OmkarK45]

What probably would work for me:

1. I had two own packages that used different versions of RCT Folly or rather had mentioned RCT Folly within them
2. When I delete those packages, pod install succeeds

From this photo I deleted react-native-simple-biometrics & the redacted package & ran pod install. It succeeded.

The solution is to have these packages use the appropriate RCT Folly version. It should be same as the one React Native expects