modules: rust: invoke subprojects automatically from dependencies()

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/mesonbuild/modules/rust.py b/mesonbuild/modules/rust.py
index c1fcf049d..974d50ae6 100644
--- a/mesonbuild/modules/rust.py
+++ b/mesonbuild/modules/rust.py
@@ -23,7 +23,7 @@ from ..interpreter.type_checking import (
 )
 from ..interpreterbase import ContainerTypeInfo, InterpreterException, KwargInfo, typed_kwargs, typed_pos_args, noKwargs, noPosargs, permittedKwargs
 from ..interpreter.interpreterobjects import Doctest
-from ..mesonlib import File, MachineChoice, MesonException, PerMachine
+from ..mesonlib import (is_parent_path, File, MachineChoice, MesonException, PerMachine)
 from ..programs import ExternalProgram, NonExistingExternalProgram
 
 if T.TYPE_CHECKING:
@@ -116,6 +116,10 @@ class RustWorkspace(ModuleObject):
             'subproject': self.subproject_method,
         })
 
+    @property
+    def subdir(self) -> str:
+        return self.ws.subdir
+
     @noPosargs
     @noKwargs
     def packages_method(self, state: ModuleState, args: T.List, kwargs: TYPE_kwargs) -> T.List[str]:
@@ -245,6 +249,10 @@ class RustPackage(RustCrate):
         if kwargs['dependencies']:
             for dep_key, dep_pkg in cfg.dep_packages.items():
                 if dep_pkg.manifest.lib:
+                    if dep_pkg.ws_subdir != self.rust_ws.subdir or \
+                        is_parent_path(os.path.join(self.rust_ws.subdir, state.subproject_dir),
+                                       dep_pkg.path):
+                        self.rust_ws._do_subproject(dep_pkg)
                     # Get the dependency name for this package
                     depname = dep_pkg.get_dependency_name(None)
                     dependency = state.overridden_dependency(depname)