From what I've seen when trying to find a solution, this seems to be an issue of using python3 as opposed to python2.
Waf: The wscript in '/var/tmp/portage/media-plugins/vapoursynth-flash3kyuu_deband-2.0.0.20180808/work/vapoursynth-flash3kyuu_deband-2.0.0.20180808' is unreadable
Traceback (most recent call last):
File "/var/tmp/portage/media-plugins/vapoursynth-flash3kyuu_deband-2.0.0.20180808/work/vapoursynth-flash3kyuu_deband-2.0.0.20180808/.waf3-2.0.10-195b3fea150563357014bcceb6844e0e/waflib/Scripting.py", line 102, in waf_entry_point
set_main_module(wscript)
File "/var/tmp/portage/media-plugins/vapoursynth-flash3kyuu_deband-2.0.0.20180808/work/vapoursynth-flash3kyuu_deband-2.0.0.20180808/.waf3-2.0.10-195b3fea150563357014bcceb6844e0e/waflib/Scripting.py", line 142, in set_main_module
Context.g_module=Context.load_module(file_path)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/var/tmp/portage/media-plugins/vapoursynth-flash3kyuu_deband-2.0.0.20180808/work/vapoursynth-flash3kyuu_deband-2.0.0.20180808/.waf3-2.0.10-195b3fea150563357014bcceb6844e0e/waflib/Context.py", line 349, in load_module
code=Utils.readf(path,m='rU',encoding=encoding)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/var/tmp/portage/media-plugins/vapoursynth-flash3kyuu_deband-2.0.0.20180808/work/vapoursynth-flash3kyuu_deband-2.0.0.20180808/.waf3-2.0.10-195b3fea150563357014bcceb6844e0e/waflib/Utils.py", line 141, in readf
with open(fname,m)as f:
^^^^^^^^^^^^^
ValueError: invalid mode: 'rUb'
From what I've seen when trying to find a solution, this seems to be an issue of using python3 as opposed to python2.