portage-ng --fetchonly
>>> Emerging : portage://net-libs/shairplay-0_pre20180824-r1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ useflag portage://net-dns/avahi-0.9_rc5 (mdnsresponder-compat)
└─step 2─┤ download portage://dev-python/dbus-python-1.5.0
│ └─ file ─┤ 199.21 Kb dbus_python-1.5.0.tar.gz
│ download portage://media-libs/alsa-lib-1.2.16.1
│ └─ file ─┤ 1.08 Mb alsa-lib-1.2.16.1.tar.bz2
│ download portage://media-libs/alsa-topology-conf-1.2.5.1-r1
│ └─ file ─┤ 11.42 Kb alsa-topology-conf-1.2.5.1.tar.bz2
│ download portage://media-libs/alsa-ucm-conf-1.2.16.1
│ └─ file ─┤ 82.32 Kb alsa-ucm-conf-1.2.16.1.tar.bz2
│ download portage://media-libs/libao-1.2.2-r3
│ └─ file ─┤ 93.88 Kb libao-1.2.2.tar.gz
│ download portage://net-dns/avahi-0.9_rc5
│ └─ file ─┤ 1.05 Mb avahi-0.9_rc5.tar.gz
│ download portage://net-libs/shairplay-0_pre20180824-r1
│ └─ file ─┤ 541.34 Kb shairplay-0_pre20180824.tar.gz
Total: 8 actions (1 useflag, 7 downloads), grouped into 2 steps.
3.04 Mb to be downloaded.
>>> Assumptions taken during proving & planning:
USE flag change (1 package):
Add to /etc/portage/package.use:
net-dns/avahi mdnsresponder-compat