Provided by: appstream-compose_0.15.5-1_amd64 bug


       appstreamcli-compose - Compose AppStream collection metadata from directory trees


       appstreamcli compose [COMMAND]


       This manual page documents briefly the appstreamcli compose command.

       appstreamcli compose is a tool to construct AppStream collection metadata from directory
       trees. The tool will also perform many related metadata generation actions, like resizing
       icons and screenshots and merging in data from referenced desktop-entry files as well as
       translation status information. Therefore, the tool provides a fast way to test how the
       final processed metadata for an application that is shipped to users may look like. It
       also provides a way to easily generate AppStream data for projects which do not need a
       more complex data generator like appstream-generator.

       In order for the appstreamcli compose command to be available, you may need to install the
       optional compose module for appstreamcli first.

       For more information about the AppStream project and the other components which are part
       of it, take a look at the AppStream pages at[1].


           A list of directories to process needs to be provided as positional parameters. Data
           from all directories will be combined into one output namespace.

       --origin NAME
           Set the AppStream data origin identifier. This can be a value like
           "debian-unstable-main" or "flathub".

       --result-root DIR
           Sets the directory where all generated output that is deployed to a user's machine is
           exported to. If this parameter is not set and we only have one directory to process,
           we use that directory as default output path.

           If both --data-dir and --icons-dir are set, --result-root is not necessary and no data
           will be written to that directory.

       --data-dir DIR
           Override the directory where the generated AppStream collection metadata will be
           written to. Data will be written directly to this directory, and no supdirectories
           will be created (unlike when using --result-root to set an output location).

       --icons-dir DIR
           Override the directory where the cached icons are exported to.

       --hints-dir DIR
           Set a directory where hints reported generated during metadata processing are saved
           to. If this parameter is not set, no HTML/YAML hint reports will be saved.

       --media-dir DIR
           If set, creates a directory with media content (icons, screenshots, ...) that can be
           served via a webserver. The metadata will be extended to include information about
           these remote media.

       --media-baseurl URL
           The URL under which the contents of a directory set via --media-dir will be served.
           This value must be set if a media directory is created.

       --prefix DIR
           Set the default prefix that is used in the processed directories. If none is set
           explicitly, /usr is assumed.

       --print-report MODE
           Print the issue hints report (that gets exported as HTML and YAML document when
           --hints-dir was set) to the console in text form.

           Various print modes are supported: on-error only prints a short report if the run
           failed (default), short generates an abridged report that is always printed and full
           results in a detailed report to be printed.

       --components COMPONENT-IDs
           Set a comma-separated list of AppStream component IDs that should be considered for
           the generated metadata. All components that exist in the input data but are not
           mentioned in this list will be ignored for the generated output.

           Don't print colored output.

           Display extra debugging information

           Display the version number of appstreamcli compose


       appstreamcli(1), appstream-generator(1).


       This manual page was written by Matthias Klumpp <>.


       Copyright © 2020-2022 Matthias Klumpp