_depmod() {
  EXTRAMODULES=extramodules-4.1-ARCH
  depmod $(cat /usr/lib/modules/$EXTRAMODULES/version)
}

post_install() {
  echo '==> You must load the riffa kernel module before using Riffa: # modprobe riffa'
  _depmod
}

post_upgrade() {
  _depmod
  echo '==> Manually reload the riffa kernel module to use the new version.'
}

post_remove() {
  _depmod
}