hey guys, in absence of a working parsec add-on I've created one, adapting the official raspbian build from parsecgaming.com
Hopefully it helps someone who was just looking to play some games from a rpi 
get it here: parsec starter — Yandex.Disk
in order to use it, you have to:
1.install from zip
2.Reboot the pi (this is important)
3.start the addon
in order to have sound, you'll need to have "dtparam=audio=on" in your config.txt.
to add this, either insert the sd to a cardreader on PC and edit the file, or login to RPI via ssh and do:
mount -o rw,remount /flash
echo "dtparam=audio=on" >> /flash/config.txt
shutdown -r now
if you want to remove it (or start from scrach), just delete the addon from kodi, AND delete /storage/.parsec folder via ssh or samba
a few points you might want to know:
1: I only tested that it works on RPI3, but it will probably work on RPI2, though I don't have one to make sure
2: initial setup requires a keyboard attached for login/pass, as there is no on-screen keyboard. On subsequent program starts it will pick up settings automatically
3: In order to release controls, Kodi is stopped before running the program. Once Parsec terminates (choose quit) kodi starts back. Let me know if there is a more elegant way of going around this.
4.there are no settings in this add-on. You can use the .txt config if necessary
5.the program will output to whatever the videomode was set in kodi before you started Parsec. So, if you want to play in 1080p60, you need to set this mode before starting parsec. Maybe I'll see if this can be easily done through the xbmc api and add this later, idk
6. The program auto-updates itself, and keeps the updated libs (as well as settings) in /storage/.parsec
For me it works fantastically, but only when the host is using the nvidia card (1050Ti)
connecting to an Intel based host (haswell, broadwell) results in much worse quality, so, realistically, iGPU is a no-go
Let me know