post_install() {
    echo 'PDF sets are stored in /usr/share/lhapdf/LHAPDF'
    echo 'You can download PDF sets with the "lhapdf" command like so:'
    echo '    $ lhapdf ls'
    echo '    # sudo lhapdf install CT10'
}

post_upgrade() {
    echo 'To update your PDF sets, please run:'
    echo '    # lhapdf install $(lhapdf list --outdated)'
}
