SUMMARY The list of non-KDE dependencies for Ubuntu and derivatives[1] contains some outdated entries: $ sudo apt install ... ... Note, selecting 'libgpgme-dev' instead of 'libgpgme11-dev' Note, selecting 'libpam0g-dev' instead of 'libpam-dev' Note, selecting 'libxslt1-dev' instead of 'libxslt-dev' Note, selecting 'perl-modules-5.28' instead of 'perl-modules' ... E: Unable to locate package libkf5vkontakte-dev E: Unable to locate package llvm-3.9 E: Couldn't find any package by glob 'llvm-3.9' E: Couldn't find any package by regex 'llvm-3.9' [1] https://community.kde.org/Guidelines_and_HOWTOs/Build_from_source/Install_the_dependencies#KDE_neon.2C_Debian.2C_Ubuntu.2C_Kubuntu SOFTWARE/OS VERSIONS Linux/KDE Plasma: Kubuntu 19.04
Sorry, this bug report become stale.