This script fully removes conflicting Flutter and Dart packages, cleans caches, installs flutter-bin from AUR, adds the user to the flutter group, adjusts permissions, and verifies installation. It ensures a clean, conflict-free Flutter environment on Arch Linux.

fix-flutter.sh

#!/usr/bin/env bash
set -e

echo "=== Clean and safe Flutter-Bin installation ==="

# Function to remove packages if installed
remove_if_installed() {
    for pkg in "$@"; do
        if pacman -Qi "$pkg" &>/dev/null || yay -Qi "$pkg" &>/dev/null; then
            echo "-> Removing conflicting package: $pkg"
            sudo pacman -Rns --noconfirm "$pkg" || true
        else
            echo "-> Package not installed: $pkg"
        fi
    done
}

# List of conflicting packages, including Dart
CONFLICT_PKGS=(
    flutter flutter-target-android flutter-target-linux flutter-target-web
    flutter-engine-common-google-bin flutter-engine-android-google-bin
    flutter-engine-linux-google-bin flutter-engine-web-google-bin
    flutter-common flutter-tool flutter-gradle flutter-intellij-patch
    flutter-material-fonts-google-bin flutter-sky-engine-google-bin
    dart
)

remove_if_installed "${CONFLICT_PKGS[@]}"

# Clean yay cache and Flutter AUR caches
echo "-> Cleaning yay cache..."
yay -Sc --noconfirm
rm -rf ~/.cache/yay/flutter*

# Clean temporary Flutter caches
echo "-> Cleaning temporary Flutter cache..."
fusermount -uq ~/.cache/flutter_sdk || true
rm -rf ~/.cache/{flutter_sdk,flutter_local}

# Install flutter-bin from AUR
echo "-> Installing flutter-bin from AUR..."
yay -S --noconfirm flutter-bin

# Add current user to flutter group
echo "-> Adding user to 'flutter' group..."
sudo usermod -a -G flutter "$USER" || true

# Adjust /opt/flutter permissions
echo "-> Adjusting permissions for /opt/flutter..."
sudo chown -R "$USER":flutter /opt/flutter || true

# Verify final Flutter and Dart versions
echo "=== Checking final Flutter and Dart versions ==="
if [ -x "/opt/flutter/bin/flutter" ]; then
    /opt/flutter/bin/flutter --version
fi
if [ -x "/opt/flutter/bin/dart" ]; then
    /opt/flutter/bin/dart --version
fi

echo "✅ Flutter-Bin installed and ready to use."