Maintain a Python wheelhouse across different machines. I'm using this for VM data disks, where the VM is only used on one host at a time, and the data disk is transferred between hosts.

wheelhouse.sh

#!/bin/bash
set -euo pipefail
IFS=$'\n\t'

# Path to the data disk
DATA_DISK="/mnt/data"
WHEELHOUSE_PATH="$DATA_DISK/wheelhouse"
PIP_CONF_PATH="$DATA_DISK/pip/pip.conf"

mountpoint -q "$DATA_DISK" || { echo "Error: $DATA_DISK not mounted"; exit 1; }

# Ensure the wheelhouse directory exists
if [ ! -d "$WHEELHOUSE_PATH" ]; then
    echo "Creating wheelhouse directory..."
    mkdir -p "$WHEELHOUSE_PATH"
fi

# Ensure pip config directory exists
if [ ! -d "$DATA_DISK/pip" ]; then
    echo "Creating pip config directory..."
    mkdir -p "$DATA_DISK/pip"
fi

# Create/update pip.conf if needed
if [ ! -f "$PIP_CONF_PATH" ]; then
    echo "Creating pip.conf..."
    mkdir -p "$DATA_DISK/.configs/pip"
    cat > "$PIP_CONF_PATH" << EOL
[global]
find-links = file://$WHEELHOUSE_PATH
no-index = false
EOL
fi

# Set up the user pip config to point to our pip.conf
USER_PIP_DIR="$HOME/.config/pip"
if [ ! -d "$USER_PIP_DIR" ]; then
    echo "Creating user pip dir"
    mkdir -p "$USER_PIP_DIR"
fi

if [ -f "$USER_PIP_DIR/pip.conf" ] && [ ! -L "$USER_PIP_DIR/pip.conf" ]; then
  cp "$USER_PIP_DIR/pip.conf"{,.bak}
fi

echo "Configuring pip to use wheelhouse..."
ln -sf "$PIP_CONF_PATH" "$USER_PIP_DIR/pip.conf"

# Set helpful environment variables for the current session (Edit: set in bashrc)
#export PIP_FIND_LINKS="file://$WHEELHOUSE_PATH"
#export PYTHONPATH="$PYTHONPATH:$DATA_DISK/lib"

# Verify the setup
echo "Wheelhouse activated!"
echo "Wheelhouse location: $WHEELHOUSE_PATH"
echo "Run 'pip install --no-index --find-links=$WHEELHOUSE_PATH package_name' to install packages"
echo "Run 'pip download --prefer-binary -d $WHEELHOUSE_PATH package_name' to download packages to the wheelhouse"