devbox
Use when managing project dependencies with Devbox. Devbox is the preferred dependency manager for new projects - covers package installation, environment variables, and shell configuration.
What this skill does
# Devbox Dependency Management
**Devbox is the preferred dependency manager** for new projects. Use it to create reproducible development environments.
## When to Use Devbox vs Other Tools
| Scenario | Tool |
|----------|------|
| New project setup | Devbox |
| Existing project with `devbox.json` | Devbox |
| Existing project with `flake.nix` (no devbox) | `nix develop` |
| Existing project with other setup | Follow their setup |
## Adding Packages
**CRITICAL**: Add packages one at a time. Adding multiple packages in a single command exceeds the 120s timeout.
```bash
# Correct - one package at a time
devbox add nodejs
devbox add python
devbox add postgresql
# Wrong - will timeout
devbox add nodejs python postgresql
```
### Finding Packages
```bash
devbox search <package-name>
```
## Environment Variables
### Testing First
Test environment variables in commands before making them permanent:
```bash
# Test that it works
DATABASE_URL=postgres://localhost/mydb devbox run npm start
```
### Making Permanent
Once confirmed working, add to `devbox.json` init_hook or setup scripts:
**Option 1: devbox.json init_hook**
```json
{
"packages": ["nodejs", "postgresql"],
"shell": {
"init_hook": [
"export DATABASE_URL=postgres://localhost/mydb",
"export NODE_ENV=development"
]
}
}
```
**Option 2: Setup scripts** (`.devbox/setup-*.sh`)
```bash
# .devbox/setup-env.sh
export DATABASE_URL=postgres://localhost/mydb
export NODE_ENV=development
```
### Anti-pattern
**Never** leave environment variables in repeated command invocations:
```bash
# Wrong - env var in every command
DATABASE_URL=x devbox run npm test
DATABASE_URL=x devbox run npm start
DATABASE_URL=x devbox run npm build
# Right - set once in init_hook, then just run
devbox run npm test
devbox run npm start
devbox run npm build
```
## Common Commands
```bash
devbox init # Initialize devbox in current directory
devbox add <pkg> # Add a package
devbox rm <pkg> # Remove a package
devbox shell # Enter devbox shell
devbox run <cmd> # Run command in devbox environment
devbox services start # Start background services
devbox services stop # Stop background services
devbox update # Update packages
```
## Project Structure
A devbox project typically has:
```
project/
├── devbox.json # Package list and configuration
├── devbox.lock # Locked versions
└── .devbox/
├── setup-env.sh # Custom environment setup (optional)
└── ...
```
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