Is there a reason you gave /var it’s own partition? Or is the problem that your entire root file system is full?

As others have said if you have a /var partition, resizing should fix the problem but the other solution would be to migrate the contents back to your main file system partition. Presumably at present there is a symbolic link folder pointing to your /var partition? Copy the /var partition contents into a new folder then boot in to recovery mode and delete the symbolic link and rename the new folder to /var. However presumably you have a good reason for splitting /var out.

If you don’t have a separate partition then the issue may be your root system itself is full and that partition needs resizing if possible or cleaning our to make space.

Finally, Flatpak does also use the /var directories in the home users folders (it uses this for single user installs of software vs system wide installs). It’s possible it’s axtually the home folder/partition that is full and that needs resizing or cleaning out to make space .

This seems very worthwhile, good on you for forking and resurrecting this.

It might be worth you updating the about page to say what lightly is - I had to google and find the original git to work it out. I’m still not even entirely clear - this seems to be more than a theme? As well as retheme Breeze It also seems to expand on what Breeze does?

Your project can stand on its own merits rather than just referencing defunct projects - that might help future new contributors better understand what the ask is and get then more interested / excited about helping?