https://man.openbsd.org/package.5

https://man.openbsd.org/pkg_create.1

http://www.openbsd.org/papers/opencon07-portstutorial/index.html

https://man.openbsd.org/update-plist.1

pkg_create can maybe solve the whole thing about creating a package.

You want to do everything as a port and the run 'make package'.

Explaination of variables in the ports: /usr/ports/lang/python/

make -V <variable-name>