Automating pkl Installation on macOS with a Shell Script

install_pkl.sh

# Determine the shell being used
if [ -n "$ZSH_VERSION" ]; then
    CONFIG_FILE=~/.zshrc
elif [ -n "$BASH_VERSION" ]; then
    CONFIG_FILE=~/.bash_profile
else
    echo "Unsupported shell."
    exit 1
fi

# Create the directory for local binaries if it doesn't exist
mkdir -p ~/.local/bin

# Determine the CPU architecture and set the download URL accordingly
ARCH=$(uname -m)
if [ "$ARCH" = "arm64" ]; then
    DOWNLOAD_URL="https://github.com/apple/pkl/releases/download/0.25.2/pkl-macos-aarch64"
elif [ "$ARCH" = "x86_64" ]; then
    DOWNLOAD_URL="https://github.com/apple/pkl/releases/download/0.25.2/pkl-macos-amd64"
else
    echo "Unsupported CPU architecture."
    exit 1
fi

# Download the pkl binary and set it as executable
curl -L $DOWNLOAD_URL -o ~/.local/bin/pkl
chmod +x ~/.local/bin/pkl

# Append the directory to PATH in the appropriate config file, if not already present
if ! grep -q 'export PATH="$HOME/.local/bin:$PATH"' $CONFIG_FILE; then
    echo 'export PATH="$HOME/.local/bin:$PATH"' >> $CONFIG_FILE
    echo "Updated $CONFIG_FILE with PATH settings."
else
    echo "$CONFIG_FILE already contains the necessary PATH settings."
fi

# Reload the shell configuration
source $CONFIG_FILE

# Validate the installation by checking the version of pkl
~/.local/bin/pkl --version