I have heard about the ability to use snaps in developer mode.
What is this mode and what can I use it for?
Developer mode, or
devmode in short, enables developers and users to install snaps without enforcing security policies. E.g.
sudo snap install notes --devmode
When installed this way, snaps behave in a similar way to traditional .deb packages in terms of accessing system resources. That is, snaps have access to the system without being restricted by app isolation and interfaces.
Developer mode is useful when:
As a developer, you can also relax security requirements at the snapcraft.yaml level by declaring
devmode confinement instead of
You'll be then flagging users that this app specifically needs to be installed with
--devmode to work. Not specifying the switch will result in failure to install.
That is, users will have to specifically acknowledge that they will install your snap in developer mode.