Design Proposals

This section contains unshipped APIs, historical plans, and normative proposals. It is deliberately separate from the ETLantic 0.18 user guide.

Do not start here

This section is not the user guide. Pages here are unshipped APIs, historical plans, or aspirational design studies. Start with Installation → Quickstart instead.

Not current API documentation

Do not copy unshipped interfaces from these pages into a production application. Start with the current-version guide and capabilities.

Exceptions (shipped): - portable authoring (@Transformation.portable, etlantic.transform) — see Portable Transformations - portable compiler protocol and first-party compilers — see Portable Transform Compiler under Plugin SDK / Integrations - Gate A versioned tabular interchange — see the 0.18 user guide

Portable transformation program (history and remaining work)

• Authoring experience (shipped 0.11)
• Function catalog (shipped 0.11)
• Compiler protocol (shipped 0.12; Polars kernel)
• Implementation plan
• DTCS evolution
• DTCS 2.0 publication record
• DTCS 3.0 Rich Portable Analytics publication record

Maintainer plans

• 0.18 Versioned Tabular Interchange record (Gate A shipped)
• FastAPI integration
• Schema drift
• Reliability
• SQLModel integration
• SparkForge adoption

Design-study examples

The Examples index distinguishes CI-tested scripts from aspirational studies. Design studies are not compatibility promises.