No. 30 of 60 ·Artifact repository software

Harmonia

Linux · Self-hosted

Freedom report

One barScore 5.3

Harmonia is ranked #30 of 60 in artifact repository software on Freedom251. It runs on Linux, Self-hosted.

Compared on artifact repository software

What it does: Harmonia is a Nix binary cache that serves the /nix/store over HTTP and is written in Rust.
NAR streaming: It supports HTTP range requests for NAR file streaming.
Build logs: It supports streaming build logs.
Package serving: Its /serve/<narhash>/ endpoint can serve package contents and can discover index.html to serve websites directly from the Nix store.
Compression: It can transparently compress content with zstd.
TLS: Harmonia can provide TLS encryption itself when no frontend web server is used.
NixOS: The README documents configuring Harmonia as a public binary cache with a NixOS module and nginx as an HTTPS frontend.
Signing: Harmonia does not sign narinfo by default without a secret key; signing can be enabled by providing private key paths.
Monitoring: Harmonia exposes Prometheus metrics at the /metrics endpoint, and the repository includes a Grafana dashboard.
Metadata access: Since version 3.1.0, harmonia-cache reads store metadata directly from db.sqlite without connecting to nix-daemon.
Nix garbage collection: The 3.3.0 release adds harmonia-gc, which removes garbage from the Nix store and can run while nix-daemon is building.
License: The project is licensed under the MIT License.

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