coffeecup.winner [1] filed a deletion request for nsight-systems [2]: Please delete this package as it's been added to extra. The one in extra wasn't updated for a couple of months, but now seems to be up- to-date.
[1] https://aur.archlinux.org/account/coffeecup.winner/ [2] https://aur.archlinux.org/pkgbase/nsight-systems/
