I don't know about the differences between TW and Leap, but Public domain is not a valid license according to the SPDX license list: https://spdx.org/licenses/ See https://wiki.spdx.org/view/Legal_Team/Decisions/Dealing_with_Public_Domain_w... for an explanation. In particular:
“Public Domain” is a concept distinct from copyright licensing; it generally means that the work no longer has any copyright protection or ownership, and therefore requires no license permission in order to use, copy, modify, distribute, perform, display, etc. In the United States – and many jurisdictions – copyright protections attach automatically to creative works upon creation if they satisfy certain minimum criteria. “Public Domain” would thus represent a significant change to the legal status of the work.
Sebastian On 2018-02-20 14:12, vetter@physik.uni-wuerzburg.de wrote:
in Leap 15.0 the License "Public-Domain" is no longer valid. In Tumbleweed it still is ok.
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