Pillow wheel currently not available for python 3.9. So tries to install from source and fails on missing zlib. So install zlib in brew and make it available via PKG_CONFIG_PATH. Apparently, this wont be necessary after Pillow 8, but who knows.
Pillow wheel currently not available for python 3.9. So tries to install from source and fails on missing zlib. So install zlib in brew and make it available via PKG_CONFIG_PATH. Apparently, this wont be necessary after Pillow 8, but who knows.