daml/nix/tools/nix-store-gcs-proxy/README.md

nix-store-gcs-proxy - A HTTP nix store that proxies requests to Google Storage

Nix supports multiple store backends such as file, http, s3, ... but not Google Storage.

Here we provide a http store backend for nix, that will proxy all the reads and writes to Google Storage.

Usage

Make sure to have the google credentials installed in ~/.config/gcloud or the GOOGLE_APPLICATION_CREDENTIALS environment variable.

Start the server in one terminal: ./nix-store-gcs-proxy --bucket-name <name-of-your-bucket>

Then in another terminal, use nix copy --to http://localhost:3000?secret-key=path/to/secret.key <INSTALLABLE>. Eg:

$ nix-store --generate-binary-cache-key cache1.example.org cache.key cache.pub
$ nix copy --to http://localhost:3000?secret-key=$PWD/cache.key nixpkgs.hello

TODO

• Section that explains how to setup GCS with the LB CDN.