Speed up releases listing

poetry/mixology/resolution.py

@@ -935,6 +935,10 @@ class Resolution:
         current_possibility_set = None
 
         for possibility in reversed(possibilities):
+            self._debug(
+                'Getting dependencies for {}'.format(possibility),
+                depth=self.state.depth if self.state else 0
+            )
             dependencies = self._provider.dependencies_for(possibility)
             if current_possibility_set and current_possibility_set.dependencies == dependencies:
                 current_possibility_set.possibilities.insert(0, possibility)

poetry/puzzle/provider.py

@@ -204,7 +204,14 @@ class Provider(SpecificationProvider):
             # Information should already be set
             pass
         else:
-            package = self._pool.package(package.name, package.version)
+            complete_package = self._pool.package(package.name, package.version)
+
+            # Update package with new information
+            package.requires = complete_package.requires
+            package.description = complete_package.description
+            package.python_versions = complete_package.python_versions
+            package.platform = complete_package.platform
+            package.hashes = complete_package.hashes
 
         return [
             r for r in package.requires

poetry/repositories/pypi_repository.py

@@ -96,7 +96,7 @@ class PyPiRepository(Repository):
                 versions.append(version)
 
         for version in versions:
-            packages.append(self.package(name, version))
+            packages.append(Package(name, version))
 
         return packages