extensions

flutter-master

Points to the binary, relative to the snap’s root,
and runs when the snap is invoked.

A list of one or more extensions. Snapcraft extensions
are reusable components that can expose sets of libraries
and tools to a snap at build and runtime,
without the developer needing to have specific knowledge
of included frameworks. The flutter-master extension exposes
the GTK 3 libraries to the Flutter snap. This ensures a
smaller footprint and better integration with the system.

    The flutter-master extension sets your flutter channel
to master.  If you would like to build your app with the dev
channel simply use the flutter-dev extension.

A list of one or more plugs for system interfaces.
These are required to provide necessary functionality
when snaps are strictly confined. This Flutter snap needs
access to the network.