PlasticSoup [1] filed a deletion request for httpsqs [2]: Download fails even if arch= is corrected to x86_64. While it may be possible to correct the PKGBUILD and install the software, it appears the various forks of httpsqs are all abandoned.
[1] https://aur.archlinux.org/account/PlasticSoup/ [2] https://aur.archlinux.org/pkgbase/httpsqs/
