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Florian Klink 0fd8aa8b0d chore(users/edef): regenerate Cargo lock files 
Change-Id: I379c9ad147e46ff218fed7256f52b960a105abe7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/13191
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: edef <edef@edef.eu>
2025-03-02 18:47:47 +00:00
..
src feat(users/edef/fetchroots): init 2024-10-17 16:40:38 +00:00
.gitignore chore(users/edef/fetchroots): wire up the build 2024-10-17 16:41:03 +00:00
Cargo.lock chore(users/edef): regenerate Cargo lock files 2025-03-02 18:47:47 +00:00
Cargo.nix chore(users/edef): regenerate Cargo lock files 2025-03-02 18:47:47 +00:00
Cargo.toml feat(users/edef/fetchroots): init 2024-10-17 16:40:38 +00:00
default.nix chore(users/edef/fetchroots): wire up the build 2024-10-17 16:41:03 +00:00
README.md docs(users/edef/fetchroots): add a README for other users 2024-10-17 16:41:03 +00:00

README.md

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.