Fix horizon-gen-nix: inline job instead of importing module
Summary
- Fix:
inputs.self.modules.gitlab-ci.horizon-gen-nixresolves to the consumer's self, not horizon-flake-parts - Inline the horizon-gen-nix job definition directly in horizon-ci
inputs.self.modules.gitlab-ci.horizon-gen-nix resolves to the consumer's self, not horizon-flake-parts