cargo: Load Cargo.lock

Cargo.lock is essentially identical to subprojects/*.wrap files. When a
(sub)project has a Cargo.lock file this allows automatic fallback for
its cargo dependencies.

1 files changed, 17 insertions, 0 deletions

diff --git a/mesonbuild/cargo/manifest.py b/mesonbuild/cargo/manifest.py
index e6192d0..183d91e 100644
--- a/mesonbuild/cargo/manifest.py
+++ b/mesonbuild/cargo/manifest.py
@@ -225,3 +225,20 @@ class VirtualManifest(TypedDict):
     """
 
     workspace: Workspace
+
+class CargoLockPackage(TypedDict, total=False):
+
+    """A description of a package in the Cargo.lock file format."""
+
+    name: str
+    version: str
+    source: str
+    checksum: str
+
+
+class CargoLock(TypedDict, total=False):
+
+    """A description of the Cargo.lock file format."""
+
+    version: str
+    package: T.List[CargoLockPackage]