Option groups missing in Click.
Option groups are convenient mechanism for logical structuring CLI, also it allows you to set the specific behavior and set the relationship among grouped options (mutually exclusive options for example). Moreover, argparse stdlib package contains this functionality out of the box.
0.5.6aarch64-darwinaarch64-linuxarmv5tel-linuxarmv6l-linuxarmv7a-darwinarmv7a-linuxarmv7l-linuxi686-cygwini686-darwini686-freebsdi686-linuxi686-windowsloongarch64-linuxm68k-linuxmicroblaze-linuxmicroblazeel-linuxmips-linuxmips64-linuxmips64el-linuxmipsel-linuxpowerpc64-linuxpowerpc64le-linuxriscv32-linuxriscv64-linuxs390-linuxs390x-linuxx86_64-cygwinx86_64-darwinx86_64-freebsdx86_64-linuxx86_64-windows