distribution.xml

<?xml version="1.0" encoding="utf-8"?>
<installer-gui-script minSpecVersion="1">
    <title>DRS Downloader</title>
    <background file="anvil.png" alignment="bottomleft" mime-type="image/png" scaling="proportional" />
    <background-darkAqua file="anvil.png" alignment="bottomleft" mime-type="image/png" scaling="proportional" />
    <welcome file="Welcome.html" mime-type="text/html"/>
    <conclusion file="Conclusion.html" mime-type="text/html"/>

    <pkg-ref id="org.anvilproject.drs_downloader"/>
    <options customize="never" require-scripts="false" hostArchitectures="x86_64,arm64"/>
    <choices-outline>
        <line choice="default">
            <line choice="org.anvilproject.drs_downloader"/>
        </line>
    </choices-outline>
    <choice id="default"/>
    <choice id="org.anvilproject.drs_downloader" visible="false">
        <pkg-ref id="org.anvilproject.drs_downloader"/>
    </choice>
    <pkg-ref id="org.anvilproject.drs_downloader" version="1.0.0" onConclusion="none">installer.pkg</pkg-ref>
</installer-gui-script>