rafaelff [1] filed a deletion request for docbook-xml-dtd [2]: This package provides docbook xml DTD v4.4, which is already provided pkg 'docbook-xml', so it is redundant. This package is Also dangerous to DTD catalog installed in the system by official pkgs like docbook-xml, docbook-sgml, etc. because it installs catalog in wrong file and messes up the list of current installed. The .install file is bugged (e.g. the post-remove function installs instead of removing!) Because of these issues, I once requested its deletion ([PRQ#5684] Deletion Request for docbook-xml-dtd [1]) in June 2016, but it was denied with reason "Please settle the things with the package maintainer" -- well, I tried without any fix by the maintainer. He states he fixed, but there was no package update so far. Recently, another user[2] had the same problem as me and gaddly I was notified about it and was able to share my diagnostics and solution. Please delete this package as it is useless (redundant) and dangerous. [1] https://lists.archlinux.org/pipermail/aur- requests/2016-June/011916.html [2] https://bbs.archlinux.org/viewtopic.php?pid=1673353 [1] https://aur.archlinux.org/account/rafaelff/ [2] https://aur.archlinux.org/pkgbase/docbook-xml-dtd/