libproxy 0.5.0 is quite a massive rewrite over 0.4.x
The main architecture is:

* Client library (libproxy.so.1) - full API/ABI compatible to version 0.4
* Logic is extracted to a proxyd, running on dbus (caching and javascript
processing outside of the calling application)

By default, it runs on the session bus (accessing gnome/kde settings)

If the session bus version cannot be started (i.e sudo, su, non-x systems), it
falls back to system bus which essentially limits the daemon to read
/etc/sysconfig/proxy (no gnome/kde info available)

The new daemon needs a sec review:

[   75s] libproxy-daemon.x86_64: E: dbus-file-unauthorized (Badness: 10000)
/usr/share/dbus-1/system.d/org.libproxy.proxy.conf (sha256 file digest default
filter:79eacc14b56307b53f422d590a466f1fdbb8334bd6ce2bd7f3e9e1006c3572d0 shell
filter:294367cafc0d1cd968447c30bcde4cb54294dcfbd73167762ce2a9252dacc72b xml
filter:dbf31ac3aa2696580e6c1f44d1d4b20bc9cc6d2986f61a5f497560679910d04f)
[   75s] libproxy-daemon.x86_64: E: dbus-file-unauthorized (Badness: 10000)
/usr/share/dbus-1/system-services/org.libproxy.proxy.service (sha256 file
digest default
filter:70c03f2f079ec0396522b0e79a9b60db8f1cc84a6febf032fa0d49e4575a197b shell
filter:9dce0096a3e2bd1c614c2c31f1c7e9cd3bc9d3ce0ea61e1fa661ca5fe28a04f3 xml
filter:<failed-to-calculate>)
[   75s] Packaging D-Bus services requires a review and whitelisting by the
SUSE
[   75s] security team. If the package is intended for inclusion in any SUSE
product
[   75s] please open a bug report to request review of the package by the
security
[   75s] team. Please refer to
[   75s]
https://en.opensuse.org/openSUSE:Package_security_guidelines#audit_bugs for
[   75s] more information.

package is currently available in home:dimstar:Factory - upstream works on
https://github.com/janbrummer/libproxy2 for the time being (until ready to
merge in libproxy/libproxy)