Flutter Repair iOS - When your Flutter build comes up with weird Xcode errors, run this script from your Flutter project directory and it will clean out all the old iOS stuff and get your project dependencies fresh.

flutterrepair.sh

#!/bin/sh

# To run, download the script or copy the code to a '.sh' file (for example 'flutterrepair.sh') and run like any other script:
#   sh ./flutterrepair.sh
# or
#   sudo sh flutterrepair.sh

echo "Flutter Repair (by jeroen-meijer on GitHubGist)"

echo Cleaning project...
flutter clean 2>&1 >/dev/null

echo Updating Pod...
pod repo update

if ! ( "${PWD##*/}" == 'ios')
    then cd ios
fi

echo Removing pod files...
rm -rf Podfile.lock Pods/ 2>&1 >/dev/null

cd ..

echo Removing cached flutter dependency files...
rm -rf .packages .flutter-plugins 2>&1 >/dev/null

echo Getting all flutter packages...
flutter packages get

cd ios

echo Running pod install...
pod install

cd ..

echo DONE!

This seems a bit dangerous: if the ios directory isn't found, then it simply doesn't change dir, and continues the script. Wouldn't it be better to check at the beginning, and make sure it's invoked in the right directory?

I'd also suggest adding set -e at the start of the script, so it aborts if it encounters an error.