Fix #80: find correct python path for blender 2.92 and before

[Mateusz-Grzelinski]

Blender 2.,80, 2.91, 2.93 failed to install because of wrong python path.

Most likely fixes #99 #93 #80 #31

• improved finding python path for older versions
• improved typehints to be compatible with python 3.7
• added log for pip call
• fixed debugpy issue when sys.executable is not pointing to python what causes timeout

Tested in basic way with different versions:

blender-2.80-windows64
blender-2.83.20-windows-x64
blender-2.90.1-windows64
blender-2.93.18-windows-x64
blender-3.0
blender-3.3.21-windows-x64
blender-3.5.1
blender-3.6.14-windows-x64
blender-4.2.0-windows-x64

can be squashed, just remember to iclude sensible merge message.

[CGArtPython]

@Mateusz-Grzelinski Out of curiosity, why are we improving typehints for Python 3.7 if Blender 2.8 had Python 3.10 ?

[Mateusz-Grzelinski]

what are you talking about?

>>> bpy.app.version
(2, 80, 75)

>>> import sys; sys.version
'3.7.0 (default, Aug 26 2018, 16:05:01) [MSC v.1900 64 bit (AMD64)]'

>>> bpy.app.version
(2, 83, 20)

>>> import sys; sys.version
'3.7.4 (default, Feb 17 2020, 16:23:28) [MSC v.1916 64 bit (AMD64)]'

syntax used for typehints in 3.10 is in some cases not compatible with 3.7. We can put it in quots though.

[CGArtPython]

Yeah,
Just realized my Blender 2.8 shortcut is booting a newer version of Blender. 🫠