I have successfully installed pyobjc-core, but when I try to install pyobjc, I get an error:
(the first part)
ERROR: Command errored out with exit status 1: command: /Library/Frameworks/Python.framework/Versions/3.9/bin/python3.9 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/b6/22gqf0jd6252c93x8pbxr5nw0000gn/T/pip-install-nnn7ftk2/pyobjc-framework-cocoa/setup.py'"'"'; file='"'"'/private/var/folders/b6/22gqf0jd6252c93x8pbxr5nw0000gn/T/pip-install-nnn7ftk2/pyobjc-framework-cocoa/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' install --record /private/var/folders/b6/22gqf0jd6252c93x8pbxr5nw0000gn/T/pip-record-2nxnxwsn/install-record.txt --single-version-externally-managed --compile --install-headers /Library/Frameworks/Python.framework/Versions/3.9/include/python3.9/pyobjc-framework-Cocoa cwd: /private/var/folders/b6/22gqf0jd6252c93x8pbxr5nw0000gn/T/pip-install-nnn7ftk2/pyobjc-framework-cocoa/
(the last part)
ERROR: Command errored out with exit status 1: /Library/Frameworks/Python.framework/Versions/3.9/bin/python3.9 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/b6/22gqf0jd6252c93x8pbxr5nw0000gn/T/pip-install-nnn7ftk2/pyobjc-framework-cocoa/setup.py'"'"'; file='"'"'/private/var/folders/b6/22gqf0jd6252c93x8pbxr5nw0000gn/T/pip-install-nnn7ftk2/pyobjc-framework-cocoa/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' install --record /private/var/folders/b6/22gqf0jd6252c93x8pbxr5nw0000gn/T/pip-record-2nxnxwsn/install-record.txt --single-version-externally-managed --compile --install-headers /Library/Frameworks/Python.framework/Versions/3.9/include/python3.9/pyobjc-framework-Cocoa Check the logs for full command output.
Try to use different Python version, right now not all libraries have wheels for 3.9 .