Glossary
NixOS/Nix/Nixpkgs/Nix* slang terms and common abbreviations
See the Nix glossary: https://nixos.org/manual/nix/unstable/glossary.html
| Term | Explanation | Link |
| Hydra | The CI for nixpkgs | https://hydra.nixos.org |
| ofborg | A github bot automating CI and other things | https://github.com/NixOS/ofborg |
| Abbreviation | Full version | Explanation | Link |
| CA | Content-addressed | If a derivation is Content Addressed it means that the hashes in the paths of its outputs are generated by the outputs contents. | https://nixos.wiki/wiki/Ca-derivations |
| FOD | Fixed output derivation | A derivation where it is ensured by means of a hash that the output is fixed. Often, these are source tarballs. | |
| IFD | Import From Derivation | Using the result of a derivation in a nix expression. | https://blog.hercules-ci.com/2019/08/30/native-support-for-import-for-derivation/ |
| NUR | Nix User Repository | A community driven meta-repository of user maintained packages. | https://github.com/nix-community/NUR |
| ZHF | Zero hydra failures | As part of the release cycle, there is a time where nixpkgs maintainers try to minimise the number of build errors. ZHF is the goal of this process. |
| Abbreviation | Full version | Nix*-specific explanation |
| r13y | Reproducibility | The same derivation should produce the same output every time it is instantiated |
| TOFU | Trust on first use | Trust the hash of a source for the first time when you fetch it, and fix it in the nix expression |
| LGTM | Looks Good To Me | Often left as a comment on PRs |