Since version 2.0, Pulseaudio has had automagic support for pulseaudio. If pulseaudio is emerged before systemd is installed, it will lack systemd-login support. The pulseaudio ebuild should therefore have a systemd use flag so it will be recompiled when the user switches on the systemd useflag.
Created attachment 316859 [details, diff] pulseaudio-2.0-r1.ebuild.patch 1. systemd added to USE 2. systemd-39 added as RDEPEND 3. $(use_enable systemd) added to build params
ping ?
Thanks -- pushed this fix with bump to 2.1.