MarsSeed [1] filed a deletion request for fluid-designer [2]: Discontinued fork/mod of blender 2.7 from 2017. Orphan package, doesn't build, it would need a lot of patching, as seen in AUR/blender-2.7 package. But there seems to be no interest in this one: 2 votes, and only a few comments from or before 2017. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/fluid-designer/