ExQuality - A parallel code quality checker for Elixir projects.

Automatically fixes formatting issues, then runs all analysis stages in parallel with streaming output and actionable feedback.

Quick Start

# Everything: the gate, before a commit and in CI
mix quality

# Quick mode: skips dialyzer and coverage enforcement
mix quality --quick

# The inner loop: only the tests covering what changed
mix quality --test-scope changed

Features

• Auto-fix first - Automatically fixes formatting before analysis
• Parallel execution - Maximizes CPU utilization
• Streaming output - See results as each stage completes
• Auto-detection - Enables stages based on installed dependencies
• Actionable feedback - Shows file:line references for issues
• Scoped runs - Narrows how much code a run covers, not just which checks it runs, which is what makes a between-edits loop affordable. See ExQuality.Scope
• Configurable - Customize via .quality.exs, including named profiles
• LLM-friendly - Includes usage-rules.md for AI assistants

Supported Quality Checks

• Format (mix format)
• Compilation (dev + test environments)
• Credo (static analysis)
• Dialyzer (type checking)
• Doctor (documentation coverage)
• Gettext (translation completeness)
• Sobelow (security analysis)
• Dependencies (unused deps and security audit)
• Tests (with optional coverage via excoveralls)

A project's own checks run as stages of the same run, declared under custom: in .quality.exs. See ExQuality.Custom.

See Mix.Tasks.Quality for detailed usage information.