[READ-ONLY] Mirror of https://github.com/mostlyobvious/En57. DCB-compatible event store library in Ruby with support for PostgreSQL.

Restore Cachix-backed CI caching master

- Use the writable mostlyobvious Cachix cache in CI instead of the GitHub Actions Nix store cache, which avoids large store snapshots. - Keep pulling from the devenv cache and add mostlyobvious as a devenv Cachix pull cache so local and CI evaluation share substitutes.


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