feat: separate OCI env-building from core packages #10
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This PR is a necessary refactor to prevent circular dependencies from forming in our Nix setup.
Individual tool repos rely on the main flake in this repo for libs and upstream dependencies, as introduced for example here. However, historically this repo also built the final OCI images for those tools, which is the intended flow for now because it is convenient to centralize the publish flow and because images actually correspond to environments, not tools.
These circular dependencies are not allowed. Fortunately, we can avoid this because the env/image components can simply consume the main
opengen
flake (here done by relative path) and the tool repos remotely.Long term, this change will also make it easier to factor the OCI images more idiomatically by making them build images that directly correspond to a devShell derivation rather than separately listing their inputs. This way they can be guaranteed to work the same as a
nix develop
use-case.This PR is a blocker for the linked one above.