cargo: always create a dummy workspace

Cargo allows path in dependencies even outside a workspace.  To support
this in Meson, always create a dummy WorkspaceState outside non-workspace
manifests.

Another bug that this fixes is that the default feature was not added
for workspaces, only for projects.

In addition, this removes some confusion and code duplication
between interpret_package() and interpret_workspace().  Because
they are respectively for top-level directories and subdirectories,
interpret_package always has a project_root and interpret_workspace
never does.

0 files changed, 0 insertions, 0 deletions