# ADR-0005: CeCILL-C license for CIF

| Field         | Value       |
|---------------|-------------|
| Kind          | ADR         |
| Status        | Accepted    |
| Decided       | 2018        |
| Deciders      | Antoine Berchet, in agreement with H2020 VERIFY partners |
| Supersedes    | —           |
| Superseded by | —           |

## Context

CIF is released open-source from a CEA / CNRS / UVSQ (LSCE) context. The project needed a
license compatible with French law, interoperable with the wider open-source ecosystem, and
appropriate for a reusable library / component that other software integrates.

## Decision

CIF is licensed under **CeCILL-C**.

## Consequences

- CeCILL-C is a French-law, LGPL-compatible weak-copyleft license authored by CEA / CNRS /
  Inria. It permits using CIF as a component within larger works while keeping modifications
  to CIF itself open.
- This shapes downstream contribution and governance mechanics (DCO / CLA choices) and any
  future service / commercial structure around CIF.
- CeCILL-C was chosen accordingly to CEA legal department recommendations and requirements