Use Class for Package Definition

[beatreichenbach]

Use classes for the package definitions. Either use custom classes with class variables or something like a pydantic model.

Something like this:

#  package.py

from rez.configuration import BaseConfiguration

class Configuration(BaseConfiguration):
    name = 'nuke'
    version = '14.0.0'
    tools = ('nuke', 'nukex')
    ...
    
    def commands(self) -> None:
        super().commands()
        self.env.PATH.prepend(f'{self.root}/nuke/bin')
        
        if 'maya' in self.resolve:
            pass

Motivation
Using a Python class would allow IDEs to provide auto-complete and validation while creating packages. It would also prevent IDEs from throwing errors about unresolved references for variables like env or resolve. It would also allow developers to see default values for fields and what fields are required.

This is possible using Python but also YAML schema validation. For Python see spack package definitions. For YAML see docker compose definitions.