更改enroll命名,添加了注释,向get_error_msg中添加了一些错误代码

venv/Lib/site-packages/pip/_internal/distributions/installed.py

@@ -11,8 +11,10 @@ class InstalledDistribution(AbstractDistribution):
     """
 
     def get_metadata_distribution(self) -> BaseDistribution:
+        from pip._internal.metadata.pkg_resources import Distribution as _Dist
+
         assert self.req.satisfied_by is not None, "not actually installed"
-        return self.req.satisfied_by
+        return _Dist(self.req.satisfied_by)
 
     def prepare_distribution_metadata(
         self, finder: PackageFinder, build_isolation: bool

venv/Lib/site-packages/pip/_internal/distributions/sdist.py

@@ -19,7 +19,9 @@ class SourceDistribution(AbstractDistribution):
     """
 
     def get_metadata_distribution(self) -> BaseDistribution:
-        return self.req.get_dist()
+        from pip._internal.metadata.pkg_resources import Distribution as _Dist
+
+        return _Dist(self.req.get_dist())
 
     def prepare_distribution_metadata(
         self, finder: PackageFinder, build_isolation: bool
@@ -54,7 +56,7 @@ class SourceDistribution(AbstractDistribution):
 
         self.req.build_env = BuildEnvironment()
         self.req.build_env.install_requirements(
-            finder, pyproject_requires, "overlay", kind="build dependencies"
+            finder, pyproject_requires, "overlay", "Installing build dependencies"
         )
         conflicting, missing = self.req.build_env.check_requirements(
             self.req.requirements_to_check
@@ -106,7 +108,7 @@ class SourceDistribution(AbstractDistribution):
         if conflicting:
             self._raise_conflicts("the backend dependencies", conflicting)
         self.req.build_env.install_requirements(
-            finder, missing, "normal", kind="backend dependencies"
+            finder, missing, "normal", "Installing backend dependencies"
         )
 
     def _raise_conflicts(