This script makes it easier to copy Gnome settings and extensions from one pc to the other. It supports python>=3.5.
To use it, download it, then run python3 migrate_gnome_settings.py --export-settings to create a tar.gz file with all the settings.
Then, on your new system, copy the script and the gzip to your user's home directory and run python3 migrate_gnome_settings.py --import-settings.
For now, the script migrates: