Building the desktop client : Where can I change the default local sync folder in repository?

Hi Community.

I am a teacher using Nextcloud with my students and I must specify that the students working directories are on a network drive U:\Documents

My problem is that Nextcloud’s default local sync folder is on drive C: and, of course, many students forget to change the directory … so they ask for help because they don’t see their files on the explorer.

Anyway, to avoid these errors, I want to rebuild the client desktop and change the default local folder … but I can’t find where the default directory is specified in the desktop repository :

Thank you for your help.