a821 [1] filed a deletion request for ccao [2]: Orphan, no votes. Bad PKGBUILD that uses `sudo` to install directly onto the system (pointed out in comments but never fixed). Also, the sources are just an ELF binary. The upstream repository (https://gitee.com/cfreet/ccao) contains the sources but there is no documentation whatsoever (it looks like a personal project). The Upstream URL is dead. In conclusion, this doesn't look useful so it can be deleted IMO. [1] https://aur.archlinux.org/account/a821/ [2] https://aur.archlinux.org/pkgbase/ccao/