NixOS/hydra
Hydra, the Nix-based continuous build system [maintainers=@dasj,@Ericson2314] observed · 2026-08-28
Health v2 · maintenance only
77/100
- Activity 99
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5423
- days_rel: n/a
- days_push: 7
- n_releases_24m: 0
Adoption not part of the score
1558 stars · 356 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Hydra is the Nix-based continuous integration and build farm service from the NixOS project. It evaluates Nix expressions to schedule, run, and publish builds across a cluster of build machines, with a web UI and REST API.
Use cases
- set up a self-hosted CI server for Nix projects
- build and cache Nix packages automatically on every commit
- run a distributed build farm for nixpkgs
- publish build artifacts and release binaries from Nix expressions
- track build status and failures across many jobsets
When to choose
- your project uses Nix or NixOS and you want reproducible CI builds
- you need a self-hosted build farm with Nix-native evaluation
- you want to produce binary caches from CI builds
When to avoid
- your project does not use Nix and you want a general-purpose CI system
- you need a hosted SaaS CI solution
- you cannot run NixOS, since Hydra is primarily supported on NixOS
Facets
service · maturity active
ci-cd build-tool http-server deployment developer-tools self-hosted self-hosted nix continuous-integration build-farm nixos self-hosted-ci devops linux web-server
2 sources
- readme: https://github.com/NixOS/hydra · fetched 2026-08-28 · 62adaf0e4c31
- homepage: http://nixos.org/hydra · fetched 2026-08-29 · 5362f1e6a0a3
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| NixOS/hydra | main | 77 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem