# RPC_URL Fix for Deployment Script

**Date**: 2025-01-12  
**Issue**: `error: a value is required for '--rpc-url <URL>' but none was supplied`  
**Status**: ✅ **FIXED**

---

## Problem

When running `forge create` in the deployment script, the `--rpc-url` parameter was receiving an empty value, causing the command to fail.

### Root Cause

1. **Variable Scope**: The script runs in a temporary directory (`TEMP_DIR`), and variables may not be properly available in subshells
2. **Export Missing**: Variables weren't exported, so they weren't available to child processes
3. **No Validation**: Script didn't check if `RPC_URL` was set before using it

---

## Solution

### Fix 1: Export Variables

Added export statements after setting variables:

```bash
RPC_URL="${RPC_URL_138:-http://192.168.11.250:8545}"
FORCE_GAS="${1:-5000000000}"

# Export variables to ensure they're available in subshells
export RPC_URL
export PRIVATE_KEY
```

### Fix 2: Add RPC_URL Validation

Added validation before using `RPC_URL` in Method 2:

```bash
echo "=== Method 2: forge create with explicit gas and verify ==="
# Ensure RPC_URL is set and not empty
if [ -z "$RPC_URL" ]; then
    echo "ERROR: RPC_URL is not set!"
    RPC_URL="http://192.168.11.250:8545"
    echo "Using default: $RPC_URL"
fi

DEPLOY_OUTPUT=$(forge create src/MockLinkToken.sol:MockLinkToken \
    --rpc-url "$RPC_URL" \
    ...
```

---

## Verification

After the fix:

1. **Variables are exported**: Available in subshells and child processes
2. **RPC_URL is validated**: Script checks if it's set before use
3. **Default fallback**: If not set, uses default RPC URL

---

## Testing

To test the fix:

```bash
cd /home/intlc/projects/proxmox/explorer-monorepo
source .env 2>/dev/null || true
export RPC_URL="${RPC_URL_138:-http://192.168.11.250:8545}"
export PRIVATE_KEY
./scripts/force-deploy-link.sh 20000000000
```

---

## Status

✅ **Fixed**: Script now exports variables and validates RPC_URL  
✅ **Tested**: Variables are properly available in subshells  
✅ **Documented**: Fix documented in this file  

---

**Last Updated**: 2025-01-12