prism-dx 0.2.0b2

Developer onboarding tool — refract complexity into clarity

Prism

Refract complexity into clarity

Configuration inheritance system for managing multi-level development environments

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What is Prism?

Prism is a configuration inheritance system that manages complex, multi-level development environments through composable YAML configurations. Like a prism refracts white light into distinct colors, Prism takes organizational complexity and refracts it into clear, manageable configuration layers.

The Problem

Large organizations face configuration chaos:

• Complex hierarchies — Fortune 500 companies with 5+ organizational levels
• Conflicting requirements — Different teams need different tools, configs, and access
• Configuration drift — No single source of truth across thousands of employees
• Onboarding friction — New hires waste days configuring their environment

The Solution

Prism provides:

• Configuration inheritance — Define once at company level, override per team
• Multi-level hierarchies — Support structures from flat (startups) to 5+ levels (enterprise)
• Web UI — Visual prism selection and installation wizard with themes, cascading dropdowns, and real-time progress
• CLI tools — Scriptable, automatable, CI/CD friendly
• NPM distribution — Packages published to npm, no custom infrastructure needed
• Validation — Catch errors before deployment
• Smart merging — Deep-merge with configurable strategies (union, override, append)
• Installation rollback — Every action tracked, automatic LIFO undo on failure
• Privilege separation — Two-phase install with sudo session management

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Quick Start

Install from PyPI

pip install prism-dx
prism ui            # Launch the web installer
prism install       # Or install directly from CLI

Install from source

git clone https://github.com/andersonwilliam85/prism.git
cd prism
make install-dev
make run            # Opens at http://localhost:5555

See Getting Started for the full guide.

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Features

Web UI Installer

• Prism gallery with visual cards for all configurations
• Step-by-step wizard with progress tracking
• Theme system — 5 built-in themes + custom themes with 5 gradient color slots
• Cascading dropdowns — Dynamic field dependencies (e.g., division filters available teams)
• Settings panel — Runtime registry, CDN, and language overrides
• Responsive design with smart validation

Configuration Inheritance

Multi-level hierarchy with configurable merge strategies:

Company (base)
  └── Business Unit
      └── Department
          └── Team
              └── Individual

Configurations merge intelligently — base layer defines company standards, each level can override or extend using union, deep_merge, override, or append strategies.

The Default Prism

The built-in prism package scales from a solo developer to an enterprise team. Pick three tiers and go:

Tier	Options	What it controls
Scale	Individual, Small Team, Enterprise	Git workflows, PR templates, access patterns
Environment	Minimal, Standard, Full-Featured	Tooling depth — just git+SSH up to full runtime stacks
Platform	GitHub, GitLab, Bitbucket, Gitea, Multi	Provider-specific config (SSH hosts, CLI tools, webhooks)

A solo dev picks Individual + Minimal + GitHub and gets git config and an SSH key in seconds. A platform team picks Enterprise + Full-Featured + Multi and gets structured workspaces, multiple runtimes, and multi-provider support.

More Prisms

Prism	Use Case	Hierarchy	Scale
startup	Seed/Series A startups	1 level	10–50
acme-corp	Template for companies	2 levels	100–1K
consulting-firm	Multi-client work	By client	Variable
fortune500	Enterprise	5 levels	50K+
university	Academic institutions	Dept to Lab	Variable
opensource	Community projects	Flat	Community

Each prism includes custom themes, cascading user fields, and rollback configuration.

Installation Safety

• Rollback — Every file copy, directory creation, command execution, and config change is tracked. On failure, changes unwind in LIFO order.
• Privilege separation — Normal operations run first. Privileged steps (apt-get, global npm) require explicit sudo approval in a separate phase.
• Sudo sessions — Cryptographic tokens with 15-minute TTL and 3-attempt lockout.

NPM Distribution

# Packages auto-fetch from npm via unpkg CDN
python3 install.py --prism prism

# Use custom registry (corporate/air-gapped)
python3 install.py --npm-registry https://npm.mycompany.com

Local Docs Server

Post-install, browse your workspace configuration:

python3 -m prism.tools.docs_server --workspace ~/dev

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Architecture

Prism follows a VBD-inspired (Volatility-Based Decomposition) layered architecture with dependency injection.

Layer	Role	Components
Managers	Orchestration — the "what"	installation_manager, package_manager
Engines	Business logic — the "how"	config_engine (schema evolution), installation_engine (installation surface)
Accessors	External boundaries — the "where"	file, command, registry, system, rollback, sudo
Utilities	Cross-cutting services	event_bus (pub/sub progress)
Models	Plain dataclasses	Installation, config, rollback DTOs
UI	Flask web app	REST API + static frontend

All layers are wired through a composition root (container.py) with constructor injection — no global state, fully testable.

See Architecture Reference for the full breakdown.

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Development

Prerequisites

• Python 3.9+
• Flask, PyYAML, Rich

Setup

make install-dev    # Install dev dependencies
make test           # Run tests (unit + CLI)
make test-all       # All tests including E2E
make run            # Start dev server
make lint           # Run linters (flake8 + mypy)
make format         # Format code (black + isort)
make check          # All CI checks

Testing

make test              # Unit + CLI tests
make test-all          # All tests including E2E
make test-coverage     # With coverage report
make test-trace        # E2E with Playwright traces

GitHub Actions runs lint, test, coverage, and security scans on every PR.

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Documentation

Full documentation at andersonwilliam85.github.io/prism.

• Getting Started
• Themes & Customization
• Cascading Dropdowns
• Configuration Schema
• Architecture
• Rollback System
• Privilege Separation
• Contributing

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Supported Platforms

• macOS (Intel and Apple Silicon)
• Windows 10/11
• Linux (Ubuntu 20.04+, Debian, Fedora, RHEL)
• WSL2

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Contributing

1. Fork the repository
2. Create a feature branch: git checkout -b feature/my-feature
3. Make changes and test: make test-all
4. Format code: make format
5. Run CI checks: make check
6. Submit a Pull Request

See Contributing Guide.

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License

MIT License — See LICENSE

Copyright (c) 2025 William Anderson

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Prism — Refract complexity into clarity
Made by William Anderson