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Palimpsest Licence

PMPL-1.0-or-later MPL-2.0 fallback

Table of Contents

Licence Summary

Status

Stated SPDX licence

PMPL-1.0-or-later

Legal operative fallback

MPL-2.0 (automatic, until PMPL achieves formal legal recognition)

Exception — IDApTIK + Airborne Submarine Squadron

AGPL-3.0 (co-developed projects, see below)

PMPL-1.0-or-later

The Palimpsest-MPL License 1.0 (PMPL-1.0) is the intended primary licence for all hyperpolymath original code. It incorporates the Mozilla Public License 2.0 by reference and adds:

  • Emotional Lineage — preserve narrative intent and cultural context

  • Provenance Integrity — retain attribution and lineage metadata

  • Ethical Use Constraints — explicit consent for non-interpretive AI training

  • Quantum-Safe Provenance (optional) — post-quantum signature support

SPDX identifier used in all source files: PMPL-1.0-or-later

Legal Status and MPL-2.0 Fallback

PMPL does not yet have formal legal standing as a standalone licence. Until it achieves that status:

  • All code labelled PMPL-1.0-or-later is legally operative under MPL-2.0 terms automatically — no additional declaration is required.

  • If a legal dispute arose today, MPL-2.0 would be the enforced text.

  • This is not a dual-licence — PMPL-1.0-or-later is the stated form; MPL-2.0 is the automatic fallback, not a separate grant.

When PMPL achieves formal recognition, the fallback becomes unnecessary and all existing PMPL-1.0-or-later declarations take full legal effect without any re-labelling.

Platform Fallback (MPL-2.0 Explicit)

For distribution on registries that require an OSI-approved licence (crates.io, Hackage, npm), use:

SPDX-License-Identifier: MPL-2.0
// (PMPL-1.0-or-later preferred; MPL-2.0 required for [platform])

This is distinct from the automatic legal fallback above — it is an explicit declaration for platform compliance, not a signal that PMPL is not preferred.

Exception: AGPL-3.0 Projects

IDApTIK and Airborne Submarine Squadron are co-developed with Jonathan’s son. These projects use AGPL-3.0, not PMPL-1.0-or-later.

This exception is permanent for those two projects. All other hyperpolymath original code uses PMPL-1.0-or-later (falling back to MPL-2.0).

SPDX Header Summary

# Hyperpolymath original code — standard:
# SPDX-License-Identifier: PMPL-1.0-or-later

# Platform-required fallback (crates.io, Hackage, etc.):
# SPDX-License-Identifier: MPL-2.0
# (PMPL-1.0-or-later preferred; MPL-2.0 required for [platform])

# Co-developed projects (IDApTIK, Airborne Submarine Squadron):
# SPDX-License-Identifier: AGPL-3.0-or-later

# Third-party code — preserve original:
# SPDX-License-Identifier: MIT  (or whatever the original is)

Further Reading

  • LICENCE-POLICY.adoc — canonical policy statement (this directory)

  • rhodium-standard-repositories/PALIMPSEST.adoc — RSR integration

  • palimpsest-license repo — PMPL licence text