GENERATING METADATA:
1) Customize the asgen-config.json configuration file (don't rename it!):
   - "ArchiveRoot" should point to a directory containing a checkout of the binary repos.
   - "Backend" should be "archlinux" for alpm based packages.
   - In "Suites", "sections" is a list with the repositories that should be indexed.
   - See https://github.com/ximion/appstream-generator/blob/master/docs/asgen-config.md for other options.
2) Run 'appstream-generator process arch' (Replace 'arch' by the suite name configured in asgen-config.json)
3) Move the contents of export/data/arch to sources.archlinux.org for packaging

PACKAGING:
4) Components-${arch}.xml.gz files should be renamed to include the repo name and installed to /usr/share/swcatalog/xml/
5) Icons-${size}.tar.gz should be decompressed and installed to /usr/share/swcatalog/icons/