feat(stubs): impl resolve_package_url for micropython-stubs repo.

micropy/stubs/repositories/micropython.py

@@ -1,20 +1,22 @@
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
+from distlib.locators import locate
 from pydantic import Field, validator
 from typing_extensions import Annotated
 
 from ..manifest import StubsManifest
 from ..package import StubPackage
 
+if TYPE_CHECKING:
+    from distlib.database import Distribution
+
 
 class MicropythonStubsPackage(StubPackage):
     name: str
     version: Annotated[str, Field(alias="pkg_version")]
 
-    @property
-    def package_name(self) -> str:
-        return f"{self.name}@{self.version}"
-
 
 class MicropythonStubsManifest(StubsManifest):
 
@@ -26,4 +28,6 @@ def _get_packages(cls, v: dict[str, dict]):
         return list(data)
 
     def resolve_package_url(self, package: StubPackage) -> str:
-        pass
+        dist: Distribution = locate(f"{package.name} ({package.version})")
+        dist_url = next(i for i in dist.download_urls if "tar.gz" in i)
+        return dist_url