Migration Guide

This guide helps you migrate from other package managers to Launchpad, whether you want to replace them entirely or use Launchpad alongside your existing tools.

Migration Philosophy

Launchpad is designed to coexist peacefully with other package managers rather than replace them entirely. This means you can:

Keep using Homebrew for GUI applications and system tools
Use Launchpad for development environments and project-specific tools
Gradually migrate projects at your own pace
Maintain both systems without conflicts

From Homebrew

Understanding the Difference

Homebrew installs to /opt/homebrew (Apple Silicon) or /usr/local (Intel) Launchpad installs to /usr/local by default (or ~/.local for user installs)

On Apple Silicon Macs, this means zero conflicts since they use different directories.

Audit Your Current Setup

bash

# List all Homebrew packages
brew list > homebrew-packages.txt

# Categorize your packages
echo "=== GUI Applications ===" >> migration-plan.txt
brew list --cask >> migration-plan.txt

echo "=== Development Tools ===" >> migration-plan.txt
brew list | grep -E "(node|python|go|rust|java)" >> migration-plan.txt

echo "=== System Tools ===" >> migration-plan.txt
brew list | grep -E "(git|curl|wget|jq)" >> migration-plan.txt

Migration Strategy

Option 1: Parallel Installation (Recommended)

Keep Homebrew for some packages, use Launchpad for others:

bash

# Install Launchpad
bun add -g @stacksjs/launchpad
launchpad bootstrap

# Keep using Homebrew for GUI apps
brew install --cask visual-studio-code
brew install --cask docker

# Use Launchpad for development tools
launchpad install node@22 python@3.12 go@1.21

# Both coexist peacefully
brew list           # Homebrew packages
launchpad list      # Launchpad packages

Option 2: Project-by-Project Migration

Gradually migrate projects to use Launchpad environments:

bash

# Start with a new project
mkdir new-project && cd new-project
cat > dependencies.yaml << EOF
dependencies:
  - node@22
  - yarn@1.22

env:
  NODE_ENV: development
EOF

# Environment automatically activates
# ✅ Environment activated for /path/to/new-project

# Old projects continue using Homebrew versions
cd ../old-project
node --version  # Uses Homebrew version

Option 3: Complete Migration

Replace Homebrew development tools with Launchpad:

bash

# 1. Install Launchpad
bun add -g @stacksjs/launchpad
launchpad bootstrap

# 2. Install development tools via Launchpad
launchpad install node@22 python@3.12 go@1.21 rust

# 3. Update your PATH to prioritize Launchpad
# (Launchpad bootstrap already does this)

# 4. Verify new tools are used
which node    # Should point to Launchpad installation
which python  # Should point to Launchpad installation

# 5. Remove Homebrew development tools (optional)
brew uninstall node python go rust

Command Mapping

Homebrew	Launchpad	Notes
`brew install node`	`launchpad install node@22`	Launchpad requires version specification
`brew uninstall node`	`launchpad remove node`	Launchpad removes all versions by default
`brew list`	`launchpad list`	Both show installed packages
`brew upgrade`	N/A	Launchpad uses immutable packages
`brew doctor`	`launchpad --version`	Basic health check

From Node Version Manager (nvm)

Current State Analysis

bash

# Check current Node versions
nvm list

# Check current default
nvm current

# See which projects use which versions
find . -name ".nvmrc" -exec echo {} \; -exec cat {} \; -exec echo \;

Migration Steps

Install Launchpad:

bash

bun add -g @stacksjs/launchpad
launchpad bootstrap

Create project-specific environments:

bash

# For each project, replace .nvmrc with dependencies.yaml
cd my-project

# If you have .nvmrc
NODE_VERSION=$(cat .nvmrc)
cat > dependencies.yaml << EOF
dependencies:
  - node@${NODE_VERSION}
  - yarn@1.22  # or npm, depending on preference

env:
  NODE_ENV: development
EOF

Set up shell integration:

bash

echo 'eval "$(launchpad dev:shellcode)"' >> ~/.zshrc
source ~/.zshrc

Test the migration:

bash

cd my-project  # Should automatically activate environment
node --version # Should show the version from dependencies.yaml

Gradually remove nvm (optional):

bash

# After verifying all projects work
nvm deactivate
# Remove nvm lines from ~/.zshrc
# Uninstall nvm

Benefits Over nvm

Automatic activation - No need to run nvm use
Multiple runtimes - Include Python, Go, etc. in the same environment
Environment variables - Set project-specific env vars
Isolation - Each project gets its own install directory

From Python Virtual Environments

From virtualenv/venv

bash

# Current workflow
python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt

# Launchpad workflow
cat > dependencies.yaml << EOF
dependencies:
  - python@3.12
  - pip

env:
  PYTHONPATH: ./src
  VIRTUAL_ENV: ./.venv  # For compatibility
EOF

# Environment automatically activates when entering directory

From Poetry

bash

# Current workflow
poetry install
poetry shell

# Launchpad workflow
cat > dependencies.yaml << EOF
dependencies:
  - python@3.12
  - poetry@1.5

env:
  PYTHONPATH: ./src
EOF

# Then use poetry as normal within the environment
poetry install
# No need for poetry shell - environment is already active

From Conda

bash

# Current workflow
conda create -n myproject python=3.12
conda activate myproject
conda install numpy pandas

# Launchpad workflow
cat > dependencies.yaml << EOF
dependencies:
  - python@3.12
  - pip

env:
  PYTHONPATH: ./src
  PROJECT_NAME: myproject
EOF

# Install packages with pip instead of conda
pip install numpy pandas

From rbenv/rvm (Ruby)

From rbenv

bash

# Current workflow
rbenv install 3.1.0
rbenv local 3.1.0
bundle install

# Launchpad workflow
cat > dependencies.yaml << EOF
dependencies:
  - ruby@3.1.0

env:
  BUNDLE_PATH: ./vendor/bundle
EOF

bundle install  # Uses Launchpad's Ruby version

From rvm

bash

# Current workflow
rvm install 3.1.0
rvm use 3.1.0
bundle install

# Launchpad workflow
cat > dependencies.yaml << EOF
dependencies:
  - ruby@3.1.0

env:
  GEM_HOME: ./.gems
  GEM_PATH: ./.gems
EOF

From Docker Development Environments

Simple Replacement

dockerfile

# Current Dockerfile for development
FROM node:22
WORKDIR /app
COPY package.json .
RUN npm install
CMD ["npm", "start"]

yaml

# Launchpad dependencies.yaml
dependencies:
  - node@22
  - yarn@1.22

env:
  NODE_ENV: development
  PORT: 3000

Complex Multi-Runtime Setup

dockerfile

# Current complex Dockerfile
FROM ubuntu:22.04
RUN apt-get update && apt-get install -y \
    nodejs npm python3 python3-pip postgresql-client

yaml

# Launchpad equivalent
dependencies:
  - node@22
  - python@3.12
  - postgresql@15

env:
  NODE_ENV: development
  PYTHON_ENV: development
  DATABASE_URL: postgresql://localhost:5432/myapp

Migration Best Practices

1. Start Small

Begin with new projects or non-critical environments:

bash

# Create a test project to verify Launchpad works
mkdir test-launchpad && cd test-launchpad
cat > dependencies.yaml << EOF
dependencies:
  - node@22

env:
  TEST_VAR: hello-launchpad
EOF

# Test that it works
echo $TEST_VAR
node --version

2. Migrate Gradually

Don't migrate everything at once:

bash

# Week 1: Install Launchpad, test basic functionality
# Week 2: Migrate one small project
# Week 3: Migrate more projects
# Week 4: Consider removing old tools

3. Document Your Configuration

Keep track of your Launchpad configurations:

bash

# Create a central template repository
mkdir ~/.launchpad-templates
cp successful-project/dependencies.yaml ~/.launchpad-templates/node-web-app.yaml

4. Verify Before Cleanup

Always verify Launchpad is working before removing old tools:

bash

# Test checklist
cd my-project
echo "Node version: $(node --version)"
echo "Python version: $(python --version)"
echo "Environment: $LAUNCHPAD_ENV_HASH"
npm test  # or your test command

Troubleshooting Migration Issues

PATH Conflicts

bash

# Check PATH order
echo $PATH

# Ensure Launchpad directories come first
# /usr/local/bin should appear before /opt/homebrew/bin

Shell Integration Conflicts

bash

# Check for conflicts with other version managers
grep -E "(nvm|rbenv|pyenv|rvm)" ~/.zshrc ~/.bashrc

# Temporarily disable other tools to test Launchpad
# Comment out conflicting lines and reload shell

Package Compatibility

bash

# Some packages might not be available
# Check availability first
launchpad search package-name

# Get detailed package information
launchpad info package-name

Rollback Plan

If you need to revert:

Keep old package managers during transition
Document your original configuration
Test thoroughly before cleanup
Use Launchpad's uninstall command

bash

# Complete rollback
launchpad uninstall --force

# Remove shell integration
sed -i '/launchpad dev:shellcode/d' ~/.zshrc

# Re-enable old tools
# Uncomment nvm, rbenv, etc. in shell config

Migration Success Stories

Example: Node.js Project Migration

Before (nvm):

bash

# .nvmrc
v22.0.0

# Terminal commands every time
cd project
nvm use
npm install
npm start

After (Launchpad):

yaml

# dependencies.yaml
dependencies:
  - node@22.0.0
  - yarn@1.22

env:
  NODE_ENV: development
  API_URL: http://localhost:3001

Benefits achieved:

✅ Automatic environment activation
✅ Included yarn in project environment
✅ Project-specific environment variables
✅ No manual nvm use commands

Example: Python Data Science Migration

Before (Conda):

bash

conda create -n data-science python=3.12 numpy pandas jupyter
conda activate data-science

After (Launchpad):

yaml

# dependencies.yaml
dependencies:
  - python@3.12
  - pip

env:
  PYTHONPATH: ./src
  JUPYTER_CONFIG_DIR: ./.jupyter
  DATA_DIR: ./data

bash

# Additional setup
pip install numpy pandas jupyter

Benefits achieved:

✅ Automatic environment activation
✅ Project-specific Python paths
✅ Custom environment variables
✅ Easier to version control

Getting Help During Migration

GitHub Discussions: Ask migration questions
Discord: Real-time help
Examples: Check the Examples page for migration patterns
Troubleshooting: See Troubleshooting for common issues

Remember: Migration should be gradual and reversible. Take your time and verify each step works before proceeding to the next.

Migration Guide ​

Migration Philosophy ​

From Homebrew ​

Understanding the Difference ​

Audit Your Current Setup ​

Migration Strategy ​

Option 1: Parallel Installation (Recommended) ​

Option 2: Project-by-Project Migration ​

Option 3: Complete Migration ​

Command Mapping ​

From Node Version Manager (nvm) ​

Current State Analysis ​

Migration Steps ​

Benefits Over nvm ​

From Python Virtual Environments ​

From virtualenv/venv ​

From Poetry ​

From Conda ​

From rbenv/rvm (Ruby) ​

From rbenv ​

From rvm ​

From Docker Development Environments ​

Simple Replacement ​

Complex Multi-Runtime Setup ​

Migration Best Practices ​

1. Start Small ​

2. Migrate Gradually ​

3. Document Your Configuration ​

4. Verify Before Cleanup ​

Troubleshooting Migration Issues ​

PATH Conflicts ​

Shell Integration Conflicts ​

Package Compatibility ​

Rollback Plan ​

Migration Success Stories ​

Example: Node.js Project Migration ​

Example: Python Data Science Migration ​

Getting Help During Migration ​

Migration Guide

Migration Philosophy

From Homebrew

Understanding the Difference

Audit Your Current Setup

Migration Strategy

Option 1: Parallel Installation (Recommended)

Option 2: Project-by-Project Migration

Option 3: Complete Migration

Command Mapping

From Node Version Manager (nvm)

Current State Analysis

Migration Steps

Benefits Over nvm

From Python Virtual Environments

From virtualenv/venv

From Poetry

From Conda

From rbenv/rvm (Ruby)

From rbenv

From rvm

From Docker Development Environments

Simple Replacement

Complex Multi-Runtime Setup

Migration Best Practices

1. Start Small

2. Migrate Gradually

3. Document Your Configuration

4. Verify Before Cleanup

Troubleshooting Migration Issues

PATH Conflicts

Shell Integration Conflicts

Package Compatibility

Rollback Plan

Migration Success Stories

Example: Node.js Project Migration

Example: Python Data Science Migration

Getting Help During Migration