Use own DrupalFinder which pulls path from Composer API

[weitzman]

• Implements our own DrupalFinder
• Keeps using webflo/drupal-finder when we want to discover roots that are different from the bootstrapped site. That happens in ArchiveDump and in Preflight (when you use a site alias with a local drupal root)

[weitzman]

One benefit is that we no longer dont rely on any extra in the project's composer.json

[claudiu-cristea]

What happens for the projects not using composer? Or Drush doesn’t support such sites?

[weitzman]

Not supported, for several years now - "Drush only supports one install method. It requires that your Drupal site be built with Composer and Drush be listed as a dependency." https://www.drush.org/latest/install/

[greg-1-anderson]

Drush 12 removes support for non-Composer-managed sites. I think that the "one install method" referenced above was added in Drush 9, although non-Composer-managed sites still "happened to work", mostly in support of ISP configurations.

[greg-1-anderson]

I like it; it's nice and clean. Would be a good thing for the upstream to adopt too. I'm fine with using our own implementation until that happens.

[greg-1-anderson]

I don't have any good theories about why this is breaking on Windows.