Reference
Look it up
Cheatsheets and tables to keep open while you work. Read the lessons to understand them.
- CLI cheatsheet Every nix subcommand you will use, grouped by task, with the old-CLI equivalent.
- Language cheatsheet Every Nix syntax form on one page, with the operator table and the builtins and lib functions used daily.
- Flake anatomy A complete annotated flake.nix, the output schema table, and every field in flake.lock.
- Module system reference mkOption fields, types, merge priorities and the option roots you will reach for most, verified against nixpkgs 26.11.
- Debugging guide Symptom to cause to command for language, flake, build and store failures, with every message captured on Nix 2.35.
- Glossary Forty-odd Nix terms in one or two sentences each, in the order you meet them.
- Resources The handful of Nix sources worth your time, one honest sentence each, and the ones to skip.