Elements Guix Builds

This repo uses Github Actions to run create reproducible Guix builds for an Elements release.

Prerequisites

• alpine-guix docker image. This repo is currently hardcoded to use the image pushed to ghcr.io/delta1/alpine-guix
• a "Repository secret" in settings/secrets/actions named READ_TOKEN with the value of a github token with the permission to read:packages for the alpine-guix docker image

Usage

1. Go to Actions > Guix Build
2. Click "Run Workflow" button
3. Complete the required inputs
4. ???
5. Profit!

Caching

To reduce download/build time across runs, the workflow caches (via actions/cache):

• depends sources (SOURCES_PATH), keyed on depends/packages/*.mk, shared across all hosts
• depends build cache (BASE_CACHE), keyed per-host on depends/packages/*.mk
• the guix store/database (/gnu/store, /var/guix), but only for the x86_64-linux-gnu leg, since this closure is identical across hosts and caching it per-host would exceed GitHub's 10GiB per-repo cache limit

These are bind-mounted into the build container by buildelements.sh (see SOURCES_DIR, BASE_CACHE_DIR, GUIX_STORE_DIR, GUIX_VAR_DIR, CACHE_GUIX_STORE env vars).