gustawho [1] filed a deletion request for quantum-espresso-examples [2]:
It seems this package has been discontinued.
[1] https://aur.archlinux.org/account/gustawho/ [2] https://aur.archlinux.org/pkgbase/quantum-espresso-examples/
Request #2478 has been accepted by Muflone [1].
aur-requests@lists.archlinux.org