Install appstream by entering the following commands in the terminal:
sudo apt update sudo apt install appstream
Software component metadata management
AppStream is a metadata specification, allowing to write metadata for software projects in a standardized format. It provides facilities to easily access and transform the data, as well as a few additional services to allow building feature-rich software center applications. . This package provides tools to generate, maintain and query the AppStream data pool of installed and available software, and enables integration with the APT package manager. . The 'appstreamcli' tool can be used for accessing the software component pool as well as for working with AppStream metadata directly, including validating it for compliance with the specification.