check current python linkage
% otool -L /Applications/Synalyze\ It\!\ Pro.app/Contents/MacOS/Synalyze\ It\!\ Pro | grep Python
/System/Library/Frameworks/Python.framework/Versions/2.7/Python (compatibility version 2.7.0, current version 2.7.16)
Download and install Python2.7.16 for macOS. By default this lands in /Library/Frameworks/Python.framework/Versions/2.7
Make a copy of the Synalize It! Pro app bundle, e.g. to your desktop.
cp -R /Applications/Synalyze\ It\!\ Pro.app ~/Desktop
Strip the quarantine bit (incase you just downloaded this or something)
xattr -d com.apple.quarantine ~/Desktop/Synalyze\ It\!\ Pro.app
Edit the dyld link path in the Synalize It! binary, so it looks for the python framework where you installed Python2.7. The three arguments after -change are: the link path to replace, the new link path, the path to the binary to edit. If this fails with an error like "killed install_name_tool -change", you are probably using the MAS version of Synalize It!. Don't do that, go get a copy from the website.
% install_name_tool -change /System/Library/Frameworks/Python.framework/Versions/2.7/Python \
/Library/Frameworks/Python.framework/Versions/2.7/Python \
/Users/andre/Desktop/Synalyze\ It\!\ Pro.app/Contents/MacOS/Synalyze\ It\!\ Pro
Replace the code signature, deeply and with vigor
% codesign -s - --force --deep ~/Desktop/Synalyze\ It\!\ Pro.app
verify python linkage
% otool -L ~/Desktop/Synalyze\ It\!\ Pro.app/Contents/MacOS/Synalyze\ It\!\ Pro | grep -i python
/Library/Frameworks/Python.framework/Versions/2.7/Python (compatibility version 2.7.0, current version 2.7.16)
verify code signature. You're looking for something similar to below, probably not identical.
% codesign -d -v ~/Desktop/Synalyze\ It\!\ Pro.app
Executable=/Users/andre/Desktop/Synalyze It! Pro.app/Contents/MacOS/Synalyze It! Pro
Identifier=com.synalyze-it.SynalyzeItPro
Format=app bundle with Mach-O thin (x86_64)
CodeDirectory v=20400 size=247766 flags=0x2(adhoc) hashes=7736+3 location=embedded
Signature=adhoc
Info.plist entries=41
TeamIdentifier=not set
Sealed Resources version=2 rules=13 files=526
Internal requirements count=0 size=12
Temporarily adjust PATH to remove all other references to any python other than the python2.7 you installed.
% export PATH=/Library/Frameworks/Python.framework/Versions/2.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
set PYTHONPATH. This is needed because at runtime it will try to load other python modules, and won't look in the right place unless you provide instructions.
% export PYTHONPATH=$(python2 -c 'import sys ; print ":".join(sys.path).lstrip(":")')
verify PYTHONPATH
% echo $PYTHONPATH
/Users/andre/Desktop:/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip:/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7:/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin:/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac:/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages:/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk:/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old:/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload:/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages
Launch the app from the current shell. There are a couple scary looking messages, but it's probably actually running and usable.
% ~/Desktop/Synalyze\ It\!\ Pro.app/Contents/MacOS/Synalyze\ It\!\ Pro
Trace not initialized
Warning: program compiled against libxml 209 using older 207
2022-06-07 21:57:54.158 Synalyze It! Pro[16092:2420880] [AppCenter] WARNING: -[MSAuthTokenContext authTokenHistory]/210 Failed to retrieve history state or none was found.
2022-06-07 21:57:54.158 Synalyze It! Pro[16092:2420880] [AppCenter] WARNING: -[MSAuthTokenContext setAuthTokenHistory:]/225 Failed to save new history state.
...
🎉🍺🌈
To ease the pain slightly, you can make a custom launcher (e.g. saved on your Desktop) that sets the required environment vars and then opens the app. Make a file in your home directory called synalize.command with the following contents, except edit the last line to match the location of your hacked up version of Synalize It! Pro.
#!/bin/zsh
export PATH=/Library/Frameworks/Python.framework/Versions/2.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
export PYTHONPATH=$(python2 -c 'import sys ; print ":".join(sys.path).lstrip(":")')
~/Desktop/Synalyze\ It\!\ Pro.app/Contents/MacOS/Synalyze\ It\!\ Pro
Now make that file executable:
% chmod +x ~/synalize.command
... now you can double click that file, and move it to wherever you like. You're done!