I found another OSX related problem. The relative path to the bg2ee executable is wrong (line 2430 in EET.tp2). I changed line 2430 to
OUTER_SPRINT exec ~./BaldursGateIIEnhancedEdition.app/Contents/MacOS/BaldursGateIIEnhancedEdition~
and setup-EET installs without warning. In the setup-EET.debug file following lines are found:
Copying and patching 1 file ...
[./BaldursGateIIEnhancedEdition.app/Contents/MacOS/BaldursGateIIEnhancedEdition] loaded, 15079584 bytes
./BaldursGateIIEnhancedEdition.app/Contents/MacOS/BaldursGateIIEnhancedEdition copied to EET/backup/0/BaldursGateIIEnhancedEdition, 15079584 bytes
Copied [./BaldursGateIIEnhancedEdition.app/Contents/MacOS/BaldursGateIIEnhancedEdition] to [./BaldursGateIIEnhancedEdition.app/Contents/MacOS/BaldursGateIIEnhancedEdition]
Hopefully this is intended.
Another problem with setup-END:
/bin/sh: -c: line 0: unexpected EOF while looking for matching `''
/bin/sh: -c: line 1: syntax error: unexpected end of file
/bin/sh: ./setup-EET: No such file or directory
Copying 1 file ...
Copying and patching 1 file ...
Copying and patching 1 file ...
Appending to files ...
Copying and patching 1 file ...
SUCCESSFULLY INSTALLED EET end - last mod in install order
Press ENTER to exit.
No idea what causes this. EET can be played anyway.