On Fri, Oct 20, 2023 at 4:37 PM Emmanuel Seyman <emmanuel(a)seyman.fr&gt; wrote: The full upstream license file: https://metacpan.org/release/JAWNSY/Math-Random-ISAAC-1.004/source/LICENSE The issue is not so much how to express it in SPDX terms, but how to express it in accordance with our (evolving) Fedora conventions which use SPDX license expressions. I would suggest: (1) open an issue in fedora-license-data to add some portion of this text to the `public-domain-text.txt` file, and then (2) in the License tag, use one of the following: option 1: LicenseRef-Fedora-Public-Domain OR Artistic-1.0-Perl+ OR GPL-1.0-or-later [this would require also opening an issue in fedora-license-data to add `GPL-1.0-or-later OR Artistic-1.0-Perl+` as an allowed license similar to the special cases of `GPL-1.0-or-later OR Artistic-1.0-Perl` and `GPL-2.0-or-later OR Artistic-1.0-Perl`] option 2: LicenseRef-Fedora-Public-Domain OR Artistic-2.0 OR GPL-1.0-or-later There are a few interesting issues here that I'm not getting into, including whether `Artistic-1.0-Perl+` encompasses `Artistic-2.0` (surely `Artistic-1.0+` would not since Artistic-1.0 is as far as anyone has been able to ascertain a variant of the "real" Artistic License 1.0 that was never authorized by Larry Wall or the Perl Foundation). Richard