fiddle with the export heuristic

Author: dimbleby

Diff for: src/poetry/packages/locker.py

@@ -369,12 +369,9 @@ def get_project_dependencies(
                 packages_by_name[pkg.name] = []
             packages_by_name[pkg.name].append(pkg)
 
-        # Put higher versions first so that we prefer them.
+        # Put lower versions first so that we prefer them.
         for packages in packages_by_name.values():
-            packages.sort(
-                key=lambda package: package.version,
-                reverse=True,
-            )
+            packages.sort(key=lambda package: package.version)
 
         nested_dependencies = cls.__walk_dependencies(
             dependencies=project_requires,