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Vova Kryachko fa9c067dc9 feat(nix-daemon): Implement more nix daemon operations. 
In particular QueryPathFromHashPart, QueryValidPaths, QueryValidDerivers

Change-Id: Ie6ad83cec5ce9580044b85e201e4e23394f87075
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12762
Tested-by: BuildkiteCI
Reviewed-by: edef <edef@edef.eu>
Reviewed-by: flokli <flokli@flokli.de>
2024-11-13 21:21:57 +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 feat(nix-daemon): Implement more nix daemon operations. 2024-11-13 21:21:57 +00:00
Cargo.nix feat(nix-daemon): Implement more nix daemon operations. 2024-11-13 21:21:57 +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.