I’m a developer of https://github.com/LibreCAD/LibreCAD.
Under GPLv2.0, LibreCAD focuses on 2D geometry and CAD, and is currently available in the Ubuntu main repository.
This request is for snaps of the current git master branch(Qt6 based), i.e. the latest development, and the pending release 2.2.1 branch.
For 2.2.1, the app is Qt5 based, and an example snapcraft.yaml has been created:
https://github.com/LibreCAD/LibreCAD/blob/2.2.1/snapcraft.yaml