For me the Cmake build (Win 10) isn't working anymore: Python3 is not found but is is installed and in the path.
After successful compilation und running LyX I get on the LyX-console the message: Looking for python 3.x ... Examining C:/Program Files (x86)/Python37//python3.exe Looking for python 2.x ... Warning: No python v2.x or 3.x binary found. It seems to me that the reason is in the function "python23_call()", module "os.cpp", in which a batch command-line is generated. The command-line is the concatenation of the string "python3" and a string "version_info", yielding: python3 -c 'from __future__ import print_function;import sys; print(sys.version_info[:2], end=\"\")' This command worked in PowerShell (on my system the result was (3,7)), but not for the command console "cmd" (I got a syntax error). For "cmd" I need to substitute the characters ' by the characters ". The problem for me is to change this for Windows and not to destroy LyX for other operation systems :-)
