sv API & `pnpmBuildDependency`

[jycouet]

I think the API that gives me the most pause is pnpmBuildDependency. I wonder about it for a few of reasons:

• what if we want to edit other stuff in the pnpm-workspace.yaml file in the future?
• what if pnpm changes the functionality in some way? the have not infrequent major releases
• do we want an API that's specific to a single package manager?

As an alternative, could we use the existing file API with a YAML parser?

Originally posted by @benmccann in #1020 (comment)