[WP3] Execute Phase 4 Language Runtimes Installation

[pierreribeiro]

Work Package 3: Execute Phase 4 (Language Runtimes)

Phase: 4 - Language Runtimes Installation
Priority: HIGH
Duration: 25 minutes
Risk: LOW (paths now correct after WP1 fix)

Objective

Install all 8 language runtime tools in user space.

The 8 Tools

Python Ecosystem (2 tools)

1. python3 - Python 3.12 via Homebrew
2. uv - Fast Python package manager

Rust Ecosystem (2 tools)

3. rustc - Rust compiler
4. cargo - Rust package manager

Bun Runtime (1 tool)

5. bun - Fast JavaScript runtime

Node.js Ecosystem (3 tools)

6. fnm - Fast Node Manager
7. node - Node.js LTS (via fnm)
8. pnpm - Fast package manager

Tasks

• Execute Phase 4: ansible-playbook playbooks/main.yml --tags phase4 -vv
• Verify Python 3.12 + uv installed
• Verify Rust + cargo installed
• Verify Bun installed
• Verify fnm + Node.js LTS + pnpm installed
• Verify shell configuration updated
• Commit changes: "feat(phase4): language runtimes installation complete"
• Create tag: phase-4-complete

Execution Strategy

Stage 1: Shell Detection

• Detects user shell (bash or zsh)
• Sets shell_config_file to correct path

Stage 2: Python Installation

• Install Python 3.12 via Homebrew
• Install uv via Homebrew
• Configure PATH in shell config
• Verify installation

Stage 3: Rust Installation

• Install Rust via Homebrew
• Cargo installed automatically
• Verify installation

Stage 4: Bun Installation

• Install Bun via Homebrew
• Verify installation

Stage 5: Node.js Installation

• Install fnm via Homebrew
• Configure fnm in shell
• Install Node.js LTS via fnm
• Install pnpm via Homebrew
• Verify installation

Success Criteria

• [OK] All installation tasks complete
• [OK] No permission denied errors
• [OK] All verification tasks pass
• [OK] Shell config updated correctly
• [OK] All 8 tools accessible in PATH

Expected Output

PLAY [WSL2 Ubuntu Development Environment Setup]
  
TASK [Display environment information]
  msg:
    - "Setting up development environment for pierrecr"
    - "Home directory: /home/pierrecr"

TASK [language_runtimes : Install Python ecosystem]
  changed: [localhost]

TASK [language_runtimes : Install Rust ecosystem]
  changed: [localhost]

TASK [language_runtimes : Install Bun runtime]
  changed: [localhost]

TASK [language_runtimes : Install Node.js ecosystem]
  changed: [localhost]

PLAY RECAP
localhost : ok=15 changed=4

Tool Locations (Expected)

• Python: /home/linuxbrew/.linuxbrew/bin/python3
• uv: ~/.local/bin/uv
• Rust: /home/linuxbrew/.linuxbrew/bin/rustc
• Cargo: ~/.cargo/bin/cargo
• Bun: /home/linuxbrew/.linuxbrew/bin/bun
• fnm: /home/linuxbrew/.linuxbrew/bin/fnm
• Node: ~/.local/share/fnm/node-versions/...
• pnpm: /home/linuxbrew/.linuxbrew/bin/pnpm

Branch

feature/phase-4-language-runtimes

Dependencies

• Requires: [WP1] Fix Privilege Escalation in Variable Resolution #10 (WP1: Fix Privilege Escalation) [BLOCKER]
• Requires: [WP2] Re-run Phase 2 Homebrew Configuration #11 (WP2: Re-run Phase 2) [BLOCKER]

Blocks

• feat(phase-3): Add core CLI tools installation role #4 (WP4: Validation & Documentation) - Need tools installed before validation