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kamadorueda/alejandra

The Uncompromising Nix Code Formatter observed · 2026-10-19

github.com/kamadorueda/alejandra · homepage · Nix · Unlicense (permissive) observed · 2026-10-19

Health v2 · maintenance only

89/100

  • Activity 100
  • Release rhythm 68
  • Longevity 100
How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.

  • gap_med: 356.0
  • age_days: 1728
  • days_rel: 3
  • days_push: 3
  • n_releases_24m: 3

Full methodology

Adoption not part of the score

1414 stars · 58 forks observed · 2026-10-19

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Alejandra is a fast, opinionated code formatter for the Nix expression language, written in Rust. It enforces a comprehensive style guide derived from Nixpkgs conventions and integrates with common editors and pre-commit workflows.

Use cases

  • format nix files automatically
  • enforce a consistent nix code style across a team
  • format nixpkgs quickly
  • add nix formatting to pre-commit hooks
  • format nix code in vscode or neovim

When to choose

  • you write Nix and want a fast, reliable, opinionated formatter
  • you need to format large codebases like Nixpkgs in seconds
  • you want editor or pre-commit integration for Nix formatting

When to avoid

  • you need a highly configurable formatter with many style options
  • you don't work with the Nix language

Facets

cli-tool · maturity stable

formatter cli developer-tools developer-tools programming-languages cross-platform cli nix code-style rust style-guide command-line linux macos

2 sources

Member repositories

RepositoryRoleHealth v2
kamadorueda/alejandramain89

For agents

markdown · JSON · MCP: product_card(name="kamadorueda/alejandra")

Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem