There's a small discussion in symfony/flex#40 and some other on Twitter about the fact that when using Flex, to override a bundle template one has to put it in src/Resources/{BundleName}/views/.

This is something that is a bit counter-intuitive when Flex recommends putting all templates in the templates/ directory.

My proposal is to add a new parameter to Twig's configuration:

twig:
    # Default config, identical to current behavior
    bundle_overrides_dir: '%kernel.root_dir%/Resources/`

In terms of current behavior, not changing this value would keep BC, and for the rest, the path could be changed in Twig's Flex recipe for something like this:

twig:
    # Flex config
    bundle_overrides_dir: '%kernel.project_dir%/templates/`

Then, to override a bundle directory, one would just have to create it in templates/{BundleName}/views/.

The only point I'm not totally comfortable with is the fact that views/ is always appended to the directory, and therefore makes it a bit redundant to have both templates and views in the same path.
Not sure about what to do in this case 🤔

What do you think?