Thank you for your contribution. It is ok for me if you transfer carpets to me and I maintain them in the feature. I do not thing there will be bug- or feautre- requests as so much.
I see you removed the modutils.lua. I use them in a second mod too so it is a reusable functionality for me. Do you see a way to optimize the code in modutils.lua in a reusable way? Or do you see the reusable approach is oversized for this ~20 (~60) lines?

I think they shouldn't be in global.
https://github.com/Rui-Minetest/minetest-carpets/compare/patch-1...Rui-Minetest:p
How about this way?

Yes! I like this way! Now I need to update the other mods too to use the modutils in this way.
The functionality is lost if the dependency is required or optional (depentry.required in my implementation). But I don't need this currently in other mods too.

These changes weren't in this PR yet...
I'll new PR for it．

I merged it already without PR ;)

Thanks.

I transfered my version to you. It’s all yours. If you don't need it, remove it free.

Argument of check_depend is modname, please be careful.

Ok. I renamed it to bell07/minetest-carpets-legacy
Can you please update your thread in "Mod Releases" in minetest forum?

I updated.
The thread will be moved to "Old Mods" section.