diff --git a/src/pip/_internal/commands/install.py b/src/pip/_internal/commands/install.py
index 7d7f0791f32..10406476683 100644
--- a/src/pip/_internal/commands/install.py
+++ b/src/pip/_internal/commands/install.py
@@ -353,14 +353,15 @@ def run(self, options: Values, args: List[str]) -> int:
             )
 
             if options.dry_run:
-                items = [
-                    f"{item.name}-{item.metadata['version']}"
-                    for item in sorted(
-                        requirement_set.all_requirements, key=lambda x: str(x.name)
-                    )
-                ]
+                items = sorted(
+                    r.metadata['name'], r.metadata['version']
+                    for r in requirement_set.all_requirements
+                )
                 if items:
-                    write_output("Would install %s", " ".join(items))
+                    write_output(
+                        "Would install %s",
+                        " ".join("-".join(item) for item in items),
+                    )
                 return SUCCESS
 
             try: