snix/contrib/fetchroots
Florian Klink 4ce37b5f87 chore(contrib/fetchroots): bump some crate dependencies
Change-Id: I2b664dfb833da2a90e634aa3accb4cc9f8e5d0ae
Reviewed-on: https://cl.snix.dev/c/snix/+/30260
Autosubmit: Florian Klink <flokli@flokli.de>
Reviewed-by: edef . <edef@edef.eu>
Tested-by: besadii
2025-03-23 15:40:59 +00:00
..
src chore(users/edef): move to contrib 2025-03-17 17:15:08 +00:00
.gitignore chore(users/edef): move to contrib 2025-03-17 17:15:08 +00:00
Cargo.lock chore(contrib/fetchroots): bump some crate dependencies 2025-03-23 15:40:59 +00:00
Cargo.nix chore(contrib/fetchroots): bump some crate dependencies 2025-03-23 15:40:59 +00:00
Cargo.toml chore(users/edef): move to contrib 2025-03-17 17:15:08 +00:00
default.nix chore(users/edef): move to contrib 2025-03-17 17:15:08 +00:00
README.md chore(users/edef): move to contrib 2025-03-17 17:15:08 +00:00

fetchroots

This tool is part of a suite of tools built to manage cache.nixos.org.

This tool's purpose is to build an index of all the GC roots from the channels.nixos.org releases. The result is then combined with other tools.

It does this by:

  1. Listing all the release files in the bucket.
  2. Getting the data for each of the release.
  3. Putting them in a local parquet file.

Getting started

In order to run this, you'll need AWS SSO credentials from the NixOS Infra team.

Get the creds from https://nixos.awsapps.com/start/ -> LBNixOS_Dev_PDX -> AWSReadOnlyAccess.

Run mg run, you should see a progress bar.

Congrats, you now have a roots.parquet file. You can now load it with python polars-rs or clickhouse.

roots.parquet file format

  • key (String): the release, eg nixos/22.11-small/nixos-22.11.513.563dc6476b8
  • timestamp (DateTime): the timestamp of the GC roots file for this release
  • store_path_hash (List[Binary]): hash part of the store paths rooted by this release

Development

When the Cargo.lock changes, run mg run //tools:crate2nix-generate.

To build the project, run mg build.

To get a dev environment, run nix-shell -p cargo.