Airtime-liquidsoap failing badly on debian buster

Hi everybody,
I am writing here since I tried to install libretime on a debian buster VPS and airtime-liquidsoap and airtime-playout are failing badly.

:~/libretime-3.0.0-alpha.8# airtime-liquidsoap -d
Airtime Liquidsoap
DEBUG:root: (I removed domain and api_key)
At /usr/local/lib/python2.7/dist-packages/airtime_playout-1.0-py2.7.egg/liquidsoap/ls_lib.liq, line 269, char 25-56:
this value has type
but it should be a subtype of
string (inferred at /usr/local/lib/python2.7/dist-packages/airtime_playout-1.0-py2.7.egg/liquidsoap/ls_lib.liq, line 269, char 5-13)

:~/libretime-3.0.0-alpha.8# airtime-playout --help
Traceback (most recent call last):
File “/usr/local/bin/airtime-playout”, line 4, in
import(‘pkg_resources’).run_script(‘airtime-playout==1.0’, ‘airtime-playout’)
File “/usr/local/lib/python2.7/dist-packages/pkg_resources/”, line 666, in run_script
self.require(requires)[0].run_script(script_name, ns)
File “/usr/local/lib/python2.7/dist-packages/pkg_resources/”, line 1462, in run_script
exec(code, namespace, namespace)
File “/usr/local/lib/python2.7/dist-packages/airtime_playout-1.0-py2.7.egg/EGG-INFO/scripts/airtime-playout”, line 4, in
runpy.run_module(“pypo”, run_name=“main”)
File “/usr/lib/python2.7/”, line 192, in run_module
fname, loader, pkg_name)
File “/usr/lib/python2.7/”, line 72, in _run_code
exec code in run_globals
File “/usr/local/lib/python2.7/dist-packages/airtime_playout-1.0-py2.7.egg/pypo/”, line 26, in
from .pypomessagehandler import PypoMessageHandler
File “/usr/local/lib/python2.7/dist-packages/airtime_playout-1.0-py2.7.egg/pypo/”, line 10, in
from kombu.connection import BrokerConnection
File “/usr/local/lib/python2.7/dist-packages/kombu-4.6.8-py2.7.egg/kombu/”, line 28, in
from .log import get_logger
File “/usr/local/lib/python2.7/dist-packages/kombu-4.6.8-py2.7.egg/kombu/”, line 12, in
from .utils.encoding import safe_repr, safe_str
File “/usr/local/lib/python2.7/dist-packages/kombu-4.6.8-py2.7.egg/kombu/utils/”, line 5, in
from .compat import fileno, maybe_fileno, nested, register_after_fork
File “/usr/local/lib/python2.7/dist-packages/kombu-4.6.8-py2.7.egg/kombu/utils/”, line 14, in
import importlib_metadata
File “/usr/local/lib/python2.7/dist-packages/importlib_metadata-1.6.0-py2.7.egg/importlib_metadata/”, line 9, in
import zipp
File “/usr/local/lib/python2.7/dist-packages/zipp-3.1.0-py2.7.egg/”, line 217
def open(self, mode=‘r’, *args, pwd=None, **kwargs):
SyntaxError: invalid syntax

got this version of liquidsoap (from debian):

~/libretime-3.0.0-alpha.8# dpkg -l liquidsoap
||/ Name Version Architecture Description
ii liquidsoap 1.3.3-2 amd64 audio streaming language

I have installed using ~/libretime-3.0.0-alpha.8/install, I fixed myself a problem with Mutagen (python3 only since last release, not big deal fix). I can get to see the main page, click login and then nothing works anymore. I guess there must be some mess between version (noticed a few errors in zendphp around ‘continue’ for php too).
not bad for my first time uh?
I hope you got some clues, I am happy to provide more insight if anyone is willing to jump on my case.
Thank you in any case,