Use canonical names as keys in installation report

Author: sbidoul

src/pip/_internal/models/installation_report.py

@@ -1,6 +1,7 @@
 from typing import Any, Dict, Sequence
 
 from pip._vendor.packaging.markers import default_environment
+from pip._vendor.packaging.utils import canonicalize_name
 
 from pip._internal.req.req_install import InstallRequirement
 
@@ -38,7 +39,9 @@ def _install_req_to_dict(cls, ireq: InstallRequirement) -> Dict[str, Any]:
     def to_dict(self) -> Dict[str, Any]:
         return {
             "install": {
-                ireq.get_dist().metadata["Name"]: self._install_req_to_dict(ireq)
+                canonicalize_name(ireq.metadata["Name"]): self._install_req_to_dict(
+                    ireq
+                )
                 for ireq in self._install_requirements
             },
             "environment": default_environment(),

tests/functional/test_install_report.py

@@ -74,9 +74,9 @@ def test_install_report_index(script: PipTestEnvironment, tmp_path: Path) -> Non
     )
     report = json.loads(report_path.read_text())
     assert len(report["install"]) == 2
-    assert report["install"]["Paste"]["requested"] is True
+    assert report["install"]["paste"]["requested"] is True
     assert report["install"]["python-openid"]["requested"] is False
-    paste_report = report["install"]["Paste"]
+    paste_report = report["install"]["paste"]
     assert paste_report["download_info"]["url"].startswith(
         "https://files.pythonhosted.org/"
     )