• $[HOME}/root/.config/mimeapps.list folder doesn't look correct to me
• chmod +x is wrong, this file is not supposed be executable

Finally, why you create an empty mimeapps.list? how is this supposed to fix#7846?
From what I read in#7846 there isxdg-mime that cannot create/root/.local/share/applications/mimeapps.list.new becuase the parent directory is nonexistent.

Are you able to reproduce the error reported in the issue#7846 ? If yes, have you tested this fix before submitting?

@cmaglie
yes, I was able to reproduce the error reported, and yes and I did the test before I submitted my PR, whatever PR I have given for this organization during the GSOC period, have been tested and reproduced the same, so that my PR may be merged efficiently without any problems. I am still working on one of the features in Arduino-cli. Though it might look wrong to you, I have tried my best to tackle that issue I encounter with it and came up with this reasonable solution, which apparently solves the issue.

and after adding this patch to the code, this is what is written in that particular file,mimeapps.list