MarsSeed [1] filed a deletion request for liquid-dsp-quiet-devel-git [2]: EOL since 8 years ago. [a] Unused fork of the still actively maintained liquid-dsp.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/liquid-dsp-quiet-devel-git/
