Expand extensions

Extensions make temporary modifications to the snap’s project file with useful boilerplate, right before the snap is built. They help incorporate known solutions that are common to a supported technology. Run the expand-extensions command from your project’s root directory to see how the project file will look with the extensions applied.

crafter@home:~$ snapcraft expand-extensions

name: foliate[...]layout:  /usr/lib/$SNAPCRAFT_ARCH_TRIPLET/webkit2gtk-4.0:    bind: $SNAP/gnome-platform/usr/lib/$SNAPCRAFT_ARCH_TRIPLET/webkit2gtk-4.0  /usr/share/xml/iso-codes:    bind: $SNAP/gnome-platform/usr/share/xml/iso-codesapps:  foliate:    command: usr/bin/com.github.johnfactotum.Foliate    plugs:    - gsettings    - home    - desktop    - desktop-legacy    - wayland    - x11    slots:    - dbus-daemon    common-id: com.github.johnfactotum.Foliate.desktop    desktop: usr/share/applications/com.github.johnfactotum.Foliate.desktop    command-chain:    - snap/command-chain/desktop-launch[...]

See the expand-extensions reference for more details on this command.