The script /etc/postinstall/zp_octave_finish.dash from octave-8.4.0-1.tar.bz2 fails during Cygwin update because that script expects the directory /usr/share/octave/packages to exist. Creating that directory fixes this error. CYGWIN_NT-10.0-19045 Windows-10-Laptop 3.5.0-0.617.g030a762535c1.x86_64 2024-01-29 13:16 UTC x86_64 Cygwin