I have no idea. I’ve had similar issues (no icon or launcher) with some stuff, even a flatpak for FreePascal.
I’m not sure if this should be a bug report or a package request, to be honest, someone more knowledgeable than me should know, but I suspect it should be a bug report, as all of these are in our repo.
I only know one language, so the program would be useless for me. My guess is, this is the path:
/usr/lib64/qt6/bin/linguist
Your other post says you are using GNOME. Do you also have Plasma installed? Does the icon show up there? I have seen some issues with the Menu in the profile not updating properly with some applications. If the binary is there and you have a way to refresh the listings in a GNOME menu (or test in Plasma) then we can rule out if there are packaging issues.
I do not really know anything about these linguist packages.
In Rock Plasma6 (should work the same in ROME or Cooker):
Install: sudo dnf in qt6-qttools-linguist qt6-qttools-linguist-tools --refresh
The command installs: qt6-qttools-linguist qt6-qttools-linguist-tools qt6-qttranslations-linguist version 6.9.0-1 plus dependencies.
Executable: /usr/lib64/qt6/bin/linguist
How do you open it? Copy and paste the executable in a terminal as user and hit the enter key.
You can make your own menu entry in Plasma6 with KDE Menu Editor. Don’t know about Gnome but I am sure you can do the same in Gnome
Yeah, I missed reading a couple of post, oh well.
For the missing .desktop file >>> file a bug report or rely on peoples memory. One of those is better than the other.