Package licenses
A package names, in its manifest, the license it is offered under: the
license key, which holds one id from a closed set. The id shows in
pkg info and in the package's generated documentation.
An app that keeps its Lua source out of what it ships adds
sealed #true to its manifest: packing then compiles every Lua file,
and refuses Lua source in the archive. Only an app can be sealed.
The id also shows with the package in the store. Publishing passes a
free package on as it is, including through DatumHue's package
distribution, so a free package must carry a license that permits
exactly that. That is 0BSD or MIT-0 for any package, CC0-1.0 for
an asset pack, or LicenseRef-DatumHue-Freeware for a package free of
charge with all other rights reserved.
A paid package is sold, and only its buyers receive it, so its
license key is optional: left out, the package is offered under its
creator's own terms. A paid app must be sealed; a paid library or asset
pack never is, so its buyers receive its source.
The ids, in one line each:
0BSD: use for any purpose, no obligations.MIT-0: use for any purpose, no obligations.CC0-1.0: a public-domain dedication; asset packs only.LicenseRef-DatumHue-Freeware: free to run on any licensed DatumHue edition; the published package may be passed on as it is, through DatumHue's package distribution; everything else stays reserved.LicenseRef-Proprietary: all rights reserved; the terms arrive with the package.
datumhue pkg license prints this list, and datumhue pkg license <id>
prints an id's full text. The full texts also follow below.
Full texts
0BSD — open license (0BSD): use for any purpose, no obligations
text
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
MIT-0 — open license (MIT-0): use for any purpose, no obligations
text
MIT No Attribution
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
CC0-1.0 — public domain (CC0 1.0): all rights waived; asset packs only
text
CC0 1.0 Universal is a public-domain dedication: the creator waives all
copyright and related rights in the work, worldwide, to the extent allowed
by law. It carries no patent grant, which is why DatumHue allows it only on
data-only asset packs. The canonical legal code is published by Creative
Commons as "CC0 1.0 Universal" at
https://creativecommons.org/publicdomain/zero/1.0/legalcode
LicenseRef-DatumHue-Freeware — freeware: free to play, all other rights reserved
text
# DatumHue Freeware Package License
**SPDX id: `LicenseRef-DatumHue-Freeware` — Version 1.4 — 2026-10-17**
This license covers a **package** distributed for DatumHue under the
SPDX identifier `LicenseRef-DatumHue-Freeware`. It applies to the
published package artifact — its code (compiled where the package is
sealed) and its assets — not to any DatumHue binary, which is covered
by its own license. It applies whichever DatumHue client runs the
package: the Platform workstation app, the web client at datumhue.app,
or any other licensed DatumHue client.
---
## 1. Grant
The rights holder — the author named in the package manifest — grants
you, free of charge, a non-exclusive, non-transferable right to:
- **download and run** the package with any licensed DatumHue client,
and
- **redistribute the published artifact as-is** to other DatumHue users
as part of DatumHue's content distribution (including copies your
DatumHue client serves to other users' DatumHue clients), unmodified
and in whole.
## 2. Reservations
All rights not expressly granted are reserved by the rights holder. You
may not:
- decompile, disassemble, or otherwise reverse engineer the package's
code, or attempt to reconstruct the source of a sealed package;
- modify the package or create derivative works from it;
- extract its code or assets for use outside the package;
- redistribute it outside DatumHue's content distribution, or sell,
rent, or sublicense it.
## 3. No warranty
The package is provided "as is", without warranty of any kind. To the
maximum extent permitted by law, the rights holder disclaims all
liability arising from its use.
## 4. Termination
This license ends automatically if you breach it. On termination you
must delete your copies of the package.
## 5. Governing law
This license is governed by and construed in accordance with the laws
of Sweden, without regard to its conflict-of-laws principles. Any
dispute arising out of or in connection with this license — including
questions about its existence, validity, interpretation, or
termination — is subject to the exclusive jurisdiction of the Swedish
courts, with Gothenburg District Court (Göteborgs tingsrätt) as the
court of first instance. The rights holder may nevertheless seek
injunctive or other interim relief to protect its intellectual
property rights in any court of competent jurisdiction.
Nothing in this section deprives a consumer of the protection of
mandatory consumer-protection law of the country where they reside,
including the right to bring proceedings in, and to be sued only in,
the courts for the place where they reside.
LicenseRef-Proprietary — proprietary: all rights reserved
text
All rights reserved. There is no public license text for this id: the terms
are whatever the rights holder grants you when the package is provided to
you. Absent such terms, you have no rights beyond running the package
through the channel it was provided by.