Flatpak is a system for building, distributing and running sandboxed desktop
applications on Linux. See https://wiki.gnome.org/Projects/SandboxedApps for
more information.

1. build dependencies:
   1. /proc
   2. /usr/bin/bwrap
   3. /usr/bin/xmlto
   4. /usr/bin/xsltproc
   5. libcap-devel
   6. python3-module-pyparsing
   7. bubblewrap >= 0.4.1
   8. libfuse-devel
   9. rpm-build-python3
   10. rpm-build-systemd
   11. pkgconfig(appstream-glib)
   12. libgpgme-devel
   13. pkgconfig(dbus-1)
   14. pkgconfig(dconf)
   15. pkgconfig(gio-unix-2.0) >= 2.44
   16. pkgconfig(json-glib-1.0)
   17. docbook-dtds
   18. docbook-style-xsl
   19. pkgconfig(libarchive) >= 2.8.0
   20. pkgconfig(libseccomp)
   21. pkgconfig(libsoup-2.4)
   22. pkgconfig(libxml-2.0)
   23. pkgconfig(libzstd) >= 0.8.1
   24. pkgconfig(malcontent-0) >= 0.4.0
   25. pkgconfig(ostree-1) >= 2020.8
   26. pkgconfig(polkit-gobject-1)
   27. pkgconfig(systemd)
   28. pkgconfig(xau)
   29. libattr-devel
   30. udev-rules
   31. xdg-dbus-proxy
   32. gobject-introspection-devel
   33. gtk-doc