MarsSeed [1] filed a deletion request for vkcube-git [2]: Broken Vulkan 3D demo app (spinning cube); upstream abandoned since 2 years ago. Also not needed: repo's vulkan-tools already includes the working vkcube demo, which is also being actively maintained by upstream (Khronos Group). [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/vkcube-git/