rafaelff [1] filed a deletion request for libmongo-client [2]: Upstream source URL is dead and the package maintainer disowned the package. It seems its upstream maintainer removed it. I found other sources but all them stopped development and TBH I don't know which is the original and which is a good fork. https://github.com/skyformat99/libmongo-client-1 stopped development 8 years ago. It is forked from https://github.com/balabit-deps/libmongo- client, which stopped development 4 years ago after além debian adjustments. This is an alternative C driver for MongoDB, and Arch's official repositories have the official C driver https://archlinux.org/packages/extra/x86_64/mongo-c-driver/ Hence, I propose to remove libmongo-client [1] https://aur.archlinux.org/account/rafaelff/ [2] https://aur.archlinux.org/pkgbase/libmongo-client/