sudo rm -rf /Applications/Xcode.app
sudo rm -rf /Library/Preferences/com.apple.dt.Xcode.plist
sudo rm -rf ~/Library/Preferences/com.apple.dt.Xcode.plist
sudo rm -rf ~/Library/Caches/com.apple.dt.Xcode
sudo rm -rf ~/Library/Application Support/Xcode
sudo rm -rf ~/Library/Developer/Xcode
sudo rm -rf ~/Library/Developer/CoreSimulator

xcrun simctl erase all

hndr@hndrnoMacBook-Air cd ios
hndr@hndrnoMacBook-Air ios % arch -x86_64 pod update && arch -x86_64 pod install
Update all pods
Updating local specs repositories
Analyzing dependencies
firebase_analytics: Using Firebase SDK version '7.3.0' defined in 'firebase_core'
firebase_auth: Using Firebase SDK version '7.3.0' defined in 'firebase_core'
firebase_core: Using Firebase SDK version '7.3.0' defined in 'firebase_core'
firebase_crashlytics: Using Firebase SDK version '7.3.0' defined in 'firebase_core'
firebase_remote_config: Using Firebase SDK version '7.3.0' defined in 'firebase_core'
Downloading dependencies
Installing FirebaseABTesting 7.11.0 (was 7.9.0)
Installing FirebaseInstallations 7.11.0 (was 7.9.0)
Installing GoogleUtilities 7.4.0 (was 7.1.1)
Installing PromisesObjC 1.2.12 (was 1.2.11)
Generating Pods project
Integrating client project
Pod installation complete! There are 15 dependencies from the Podfile and 32 total pods installed.

[!] CocoaPods did not set the base configuration of your project because your project already has a custom config set. In order for CocoaPods integration to work at all, please either set the base configurations of the target `Runner` to `Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig` or include the `Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig` in your build configuration (`Flutter/Release.xcconfig`).
Analyzing dependencies
firebase_analytics: Using Firebase SDK version '7.3.0' defined in 'firebase_core'
firebase_auth: Using Firebase SDK version '7.3.0' defined in 'firebase_core'
firebase_core: Using Firebase SDK version '7.3.0' defined in 'firebase_core'
firebase_crashlytics: Using Firebase SDK version '7.3.0' defined in 'firebase_core'
firebase_remote_config: Using Firebase SDK version '7.3.0' defined in 'firebase_core'
Downloading dependencies
Generating Pods project
Integrating client project
Pod installation complete! There are 15 dependencies from the Podfile and 32 total pods installed.

[!] CocoaPods did not set the base configuration of your project because your project already has a custom config set. In order for CocoaPods integration to work at all, please either set the base configurations of the target `Runner` to `Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig` or include the `Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig` in your build configuration (`Flutter/Release.xcconfig`).

Failed to build iOS app
Error output from Xcode build:
    2021-05-06 13:27:12.368 xcodebuild[57498:5025329] apply_selection_policy_once: prefer use of removable GPUs (via
    com.apple.dt.xcodebuild:GPUSelectionPolicy->preferRemovable)
    ** BUILD FAILED **

<key>GPUSelectionPolicy</key>
<string>avoidRemovable</string>

<key>GPUSelectionPolicy</key>
<string>preferRemovable</string>