MarsSeed [1] filed a deletion request for heasoft-nodata [2]: Unmaintained variant from 2020 of AUR/heasoft. Also obsolete, as upstream has changed its packaging. Instead of "full" and "nodata" distribution archives, upsteam's current default release now omits 1 GiB compressed / 6.5 GiB uncompressed old Xspec model data. [b] AUR/heasoft builds from the default, slimmer release. [a] [a]: https://aur.archlinux.org/pkgbase/heasoft [b]: https://heasarc.gsfc.nasa.gov/docs/software/lheasoft/download-go.html [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/heasoft-nodata/