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Use when managing project dependencies with Devbox. Devbox is the preferred dependency manager for new projects - covers package installation, environment variables, and shell configuration.
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**Devbox is the preferred dependency manager** for new projects. Use it to create reproducible development environments.
Guides technical evaluation of code review feedback: read fully, restate for understanding, verify against codebase, respond with reasoning or pushback before implementing.
Share bugs, ideas, or general feedback.
Devbox is the preferred dependency manager for new projects. Use it to create reproducible development environments.
| 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 |
CRITICAL: Add packages one at a time. Adding multiple packages in a single command exceeds the 120s timeout.
# Correct - one package at a time
devbox add nodejs
devbox add python
devbox add postgresql
# Wrong - will timeout
devbox add nodejs python postgresql
devbox search <package-name>
Test environment variables in commands before making them permanent:
# Test that it works
DATABASE_URL=postgres://localhost/mydb devbox run npm start
Once confirmed working, add to devbox.json init_hook or setup scripts:
Option 1: devbox.json init_hook
{
"packages": ["nodejs", "postgresql"],
"shell": {
"init_hook": [
"export DATABASE_URL=postgres://localhost/mydb",
"export NODE_ENV=development"
]
}
}
Option 2: Setup scripts (.devbox/setup-*.sh)
# .devbox/setup-env.sh
export DATABASE_URL=postgres://localhost/mydb
export NODE_ENV=development
Never leave environment variables in repeated command invocations:
# 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
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
A devbox project typically has:
project/
├── devbox.json # Package list and configuration
├── devbox.lock # Locked versions
└── .devbox/
├── setup-env.sh # Custom environment setup (optional)
└── ...