From Fedora Project Wiki

DNF supports automatic installation of langpacks for the user's current locale since Fedora 24 using RPM Weak Dependencies.

Changes/LangpacksInstallationWithRPMWeakDependencies

Problems:

  • not all langpack subpackages are present on Live media
  • there is no Workstation install media which can provide all langpack packages
  • we don't have a list of 'interesting languages'
  • gnome-software does not install languages packs automatically
  • gnome-software does only install the current language when installing flatpaks
  • when changing languages in the region panel, no lang packs are installed
  • gnome-initial-setup does not install lang packs