In Arch Linux RFC16, Arch Linux decided to use the SPDX license identifier in PKGBUILDs.[^1] The Packaging Guideline on Arch Wiki has been updated.[^2] [^1]: https://gitlab.archlinux.org/archlinux/rfcs/-/blob/master/rfcs/0016-spdx-license-identifiers.rst [^2]: https://wiki.archlinux.org/title/PKGBUILD#license
