querying-nixos

name	querying-nixos
description	Searches NixOS packages, options, Home Manager, nix-darwin, Nixvim, and Nix functions via mcp-nixos. Use when working with Nix configurations or looking up NixOS/Home Manager/nix-darwin options and packages.

Querying NixOS Resources

Use the mcp__nixos__nix tool for unified queries and mcp__nixos__nix_versions for version history.

nix tool

nix(action, query, source, type, channel, limit)

Actions

• search — search packages, options, programs, or flakes
• info — detailed info about a package or option
• stats — counts and categories
• options — browse options by prefix
• channels — list available channels
• flake-inputs — explore local flake inputs from Nix store
• cache — check binary cache status

Sources

• nixos — packages, options, programs
• home-manager — Home Manager options
• darwin — nix-darwin options
• nixvim — Nixvim options
• flakes — community flakes (search.nixos.org)
• flakehub — FlakeHub registry
• noogle — Nix function signatures (noogle.dev)
• wiki — NixOS Wiki
• nix-dev — official Nix docs
• nixhub — package metadata and store paths

nix_versions tool

nix_versions(package, version, limit)

Find historical package versions with nixpkgs commit hashes.